1 . I___________ for a lecture this afternoon, so I’m afraid I won’t be able to meet you at the airport.
A.have prepared | B.will have prepared |
C.have been preparing | D.will be preparing |
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2 . What do you guess our friend Bob ________ when we get his home?
A.are doing | B.will do | C.have been doing | D.will be doing |
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