单项选择题

He hasn't decided ______ mathematics or physics.

A．whether to study
B．if to study
C．whether studying
D．whether studied
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If you promise ______ angry with me, I'll tell you what happened to your car.
A．get not
B．not get
C．not getting
D．not to get
单项选择题
Frankly speaking, I'd rather you ______ anything about it for the time being.
A．didn't do
B．haven't done
C．have done
D．don't do
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