When he ____ finished the exam, he’ll speak to you. a. Is b. Will have c. Has d. Will

Answer 1

The verb in the main clause is in the future tense (will speak). "Has finished" is the correct answer because it is in the present perfect and indicates that the action started prior to the "speaking" and continues up until the "speaking." This is one of the uses of the perfect tenses.

Answer 2

The correct answer is C. Has is past tense. In this sentence, the first clause is past tense; the second clause is future tense. You can also tell the has is the right answer because the verb, finished, is also past tense.