单项选择题

I'm very busy （） for the exam now. Will you come again at some other time

A、to prepare
B、to be preparing
C、prepared
D、preparing

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单项选择题
There is something wrong with the computer. You'd better have it （）.

A、repairing
B、be repaired
C、repaired
D、to be repaired
单项选择题
It has not been decided （） we shall hold a meeting tomorrow.

A、what
B、whom
C、whether
D、which
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