问题

Is this the reason ______ at the meeting for his carelessnessin his work
A:What he explained
B:how he explained
C:he explained
D:why he explained
B:how he explained
C:he explained
D:why he explained
正确答案是:
同类题型
____ she is not so cheerful _____ she used to be?[ ]
ing the whole TV interview, themiddle-school girl student never once looked me _____
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Well, Idothinktherabbitisabeautiful,gentleanimalwhichcanrunveryfast– ______