Future perfect tense MCQ — 2 Practice Questions with Answers

Explanation

The time marker “By tomorrow afternoon” points to an action completed before a future time, so the future perfect form is needed. “Will have taken off” correctly means that the plane’s departure will already be complete by tomorrow afternoon. “Will take off” states a future action but does not show completion by that deadline. “Will be taking off” describes an action in progress at a future time, not one already completed. “Takes off” is the simple present and does not suit the future deadline expressed by “by tomorrow afternoon”.

Explanation

The sentence "In a week's time I will have completed my work" uses the future perfect tense correctly. This tense shows that an action will be finished before a specified future point, here one week from now. "I will complete my work" is grammatically possible, but it does not express completion before that future point as precisely. "I will be completed my work" wrongly uses a passive-like form with a transitive verb. "I will be complete my work" is also ungrammatical because "be" cannot be followed by the base verb in that structure.