问题

and gentlemen, please remain __________ until the plane hascome to a complete stop

A:is to fall
B:will fall
C:is going to fall
D:is falling

正确答案是：

同类题型

Hurry up , or you ________ catch the train.

ou read the book, you’d better make a mark_____ you have any questions.

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up _______ youfell down, and I’m sure you’ll succeed in time.

The black teacher set a good example _____all the rest of the group, ____all peace-loving people.