題目列表(包括答案和解析)
Someone is knocking at the door. It my sister. It's time for her to be back.
| A．can’t be | B．may not be | C．must be | D．mustn’t be |
— Someone is knocking at the door. Is it Ann?
— It _____ be her. She is giving a performance at the theatre now.
A. may B. must C. can’t D. mustn’t
Someone is knocking at the door. It my sister. It's time for her to be back.
A．can’t be B．may not be C．must be D．mustn’t be
| A．may; may | B．may; shouldn’t | C．must; can | D．can; may |
--Listen! Someone is knocking at the door. Who _____it be?
---It_____be Tom. He phoned to visit me this evening.
A.may;may B.may;shouldn’t C.must;can D. must;may
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