Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
ALC BK 26 L1G
BK 26 L1 Grammar
| Question | Answer |
|---|---|
| Correct the error: The laboratory technicians already completed the analysis before the director arrived at the facility. | ...had already completed... (Rule: Use the past perfect [had + V3] to show an action that was finished before another specific action or time in the past.) |
| Correct the error: Since the beginning of the fiscal quarter, our team swing traded three major semiconductor stocks. | ...has swing traded... (Rule: Use the present perfect [has/have + V3] for an action that started in the past and continues up to the present, especially when triggered by 'since'.) |
| Correct the error: He was exhausted because he has been working on the algebra curriculum for six hours before he finally took a break. | ...had been working... (Rule: Use the past perfect progressive [had + been + -ing] to emphasize the continuous duration of an action that happened before another past event.) |
| Correct the error: Look at the results! The company's strategy is paying off because our portfolio value increased by twenty percent this month. | ...has increased... (Rule: Use the present perfect when a past action has a direct, visible result or impact on the present situation.) |
| Complete the sentence: The sudden _______ (discover) of a structural flaw in the helicopter rotor forced the engineering team to suspend all test flights. | discovery (Rule: Add the suffix '-y' to the verb 'discover' to form the noun 'discovery', which functions as the subject of the sentence.) |
| Correct the error: They have been modifying the security software since three hours, but the system is still rejecting our access cards. | ...software for three hours... (Rule: Use 'for' to state the total length or duration of time, and 'since' to state a specific starting point in time.) |
| Correct the error: By the time the transit bus finally arrived, the commuters have been waiting in the heavy rain for forty-five minutes. | ...had been waiting... (Rule: Use the past perfect progressive when describing the ongoing duration of an action up until a specific cutoff point in the past.) |
| Complete the sentence: If you wish to check out the historical archives, you must submit a formal _______ (inquire) to the city library board. | inquiry (Rule: Change the verb 'inquire' to the noun 'inquiry' by replacing the ending with the '-y' suffix to act as the object of the preposition.) |
| Correct the error: The public school district is always updating its security protocols; they have revised the entire manual three times this year. | (This sentence is already grammatically correct. Rule check: Use the present perfect to describe a repeated action that has occurred an indefinite number of times up to now.) |
| Correct the error: She didn't know about the new budget limits because she has left the management meeting before the financial advisor gave the presentation. | ...because she had left... (Rule: The act of leaving happened *before* the past awareness [didn't know], so it requires the past perfect.) |
| Complete the sentence: The postal service guarantees the overnight _______ (deliver) of all medical supplies to regional clinics. | delivery (Rule: The definite article 'the' and adjective 'overnight' modify a noun, so you must change the verb 'deliver' to the noun 'delivery'.) |
| Correct the error: The gardener is completely covered in mud because he has been clearing away the dead roots all morning. | ...he has been clearing... (Rule: Use the present perfect progressive [has/have + been + -ing] for a continuous action that just finished but leaves clear physical evidence in the present.) |
| Correct the error: The state assembly will not approve the new housing plan unless the governor grants his officially recovery. | ...his official recovery / approval... (Note: If testing '-y' noun forms, use: ...unless the company provides a full recovery [recover + y] of the lost assets.) |
| Correct the error: For the past five years, the local community actively opposes the construction of the commercial factory. | ...has actively opposed / has been actively opposing... (Rule: The time frame 'for the past five years' links the past to the present, requiring a present perfect aspect.) |
| Complete the sentence: The police department launched a massive investigation into the mysterious _______ (rob) at the downtown jewelry store. | robbery (Rule: The verb 'rob' doubles its final consonant and takes the '-y' suffix [plus '-er-'] to form the noun 'robbery', meaning the act of stealing.) |
Created by:
user-2038328
Popular Miscellaneous sets