Question

 

Choose the apt option to fill in the blanks.

If they _____ machines, they would have finished much sooner.

used

had used

have used

were using


​

Answer 1

Answer:

had used machine , they would have finished much sooner

Answer 2

If they had used machines, they would have finished much sooner.

Explanation:

• In the above sentence, the past perfect tense has been used.
• Past perfect tense speaks about the action which had already completed. Also, after the completion of the action, some other action had happened.
• It is formed when 'had' is added with the past participle form of the verb.
• In the above sentence, two actions have been displayed.

Learn more:

Uses of past perfect tense

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