问题

mself in carrying out anexperiment, he can’t spare time to look after hischildren.
A:Occupied
B:Having occupied
C:Occupying
D:Having been occupied
B:Having occupied
C:Occupying
D:Having been occupied
正确答案是:
同类题型
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this novel, he is ____ as ahero, actually he is a coward
Have you got the leaving time of the train for me?—Yes, but you’d better ____of it by yourself.