I didn’t find out the answer _______ the end of the story.
A. in B. until C. when D. to
We are going for a picnic tomorrow. I'll call Wendy to make sure_______.
A. why to start B. which to start C. what to start D. when to start
—It’s so hot here . Do you mind _____the window ?.
—_____. I will do it right now .
A. to close ; Yes B. to open ; No
C. opening ; Of course not D. closing ; I hope so
—Must I finish my homework today?
—No, you______ . You can finish it tomorrow.
A. can’t B. shouldn’t C. needn’t D. mustn’t
Trees can help reduce air pollution . That’s true. __ , they can make the city cooler in hot summer .
A. However B. Therefore
C. Moreover D. Otherwise
He has been away .
A. since a month B. for a month C. for a month ago D. in a month
