The old cover of the book ______.
A: must be used
B: is sometimes used
C: should never be used
A: must be used
B: is sometimes used
C: should never be used
举一反三
- Ann doesn’t like milk. She says that she _____ it at home. A: was never used to drink B: was never used to drinking C: never used to drink D: never used to drinking
- He must admit that he ( ) one of them. A: used to B: get used to be C: used to be D: be used to
- Which kind of oil should never be used as aviation oil?
- There used to be a long over whether the book should be published or not.
- I have never known that it can ______ save lives. A: used to B: be used to C: get used to