单项选择题

I failed in the final examination last term and only then ______ the importance of studies.

A．I realized
B．I had realized
C．had I realized
D．did I realize
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单项选择题
The husband gave his wife ______ every month in order to please her.
A．all half his income
B．his half all income
C．half his all income
D．all his half income
单项选择题
We need to consider what ______ we will be using for language training.
A．abilities
B．appliances
C．facilities
D．qualities
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