问题

Where did you get this book?—I picked it up from a secondhand bookshop if you ________ know.

A:must
B:will
C:can
D:shall

正确答案是：

同类题型

Happy New Year, Millie! — _______________ .

If Tom the game, we’ll give him a surprise.

Excuse me. Could you please tell me________ —Sure. Go straight ahead.It is on your left.

Does Daniel ________ after school —No, hedoesn’t.

Language study is a process that you need to _____ something first and later on you can take something out.