---- Will you answer the telephone? It ________ be your mother.
---- Sorry, I _______. I’m very busy.
A.can, mustn’t | B.will, can’t |
C.may, can’t | D.need, will |
---- Will you answer the telephone? It ________ be your mother.
---- Sorry, I _______. I’m very busy.
A.can, mustn’t | B.will, can’t |
C.may, can’t | D.need, will |
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