Present perfect vs. past perfect

[carla caro]

Test No. incompl/inter-7 "A Holiday Report", question 3

If I want to pass my exams, I ......... study very hard.

(a) can
(b) must
(c) will

Test No. incompl/inter-7 "A Holiday Report", answer 3

If I want to pass my exams, I must study very hard.

Correct answer: (b) must

Your answer was: incorrect
If I want to pass my exams, I will study very hard.
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i want you bring me a "tip", to make a good diference between present perfect and past perfect

carla

[Alan]

Have a look at these sentences:

I have seen that film (TIME INDEFINITE)

I saw that film on Tuesday (TIME DEFINITE)

After I had seen the film (FIRST THING I DID), I went to the restaurant. (SECOND THING I DID)
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English as a Second Language
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