Question

Choose the correct alternative to complete the given sentence.
Alex didn't come to see the film last night because he ______ it before.

• A. saw
• B. had seen
• C. has seen
• D. was seen

Answer 1

The correct option is B had seen

Here, 'had seen' in past perfect tense is correct because it is used to indicate a completed action of the past that happened before another event took place. Here, 'last night' indicates a past action.
'Saw' in simple past is incorrect because it indicates a completed action and when two actions happen in the past the one which happens first will be in the past perfect tense, hence option 'A' is incorrect
'Has seen' in present perfect tense is incorrect because it is used to indicate an action completed in the immediate past which has relation with the present time.
'Was seen'is incorrect for the given sentence ).

Thus the correct answer is 'B'