单项选择题

You can hardly imagine the difficulty the single mum had ______ her children.

A．brought up
B．to bring up
C．bringing up
D．to have brought up
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单项选择题
The test ______, we began our holiday.
A．was finished
B．finishing
C．was finishing
D．finished
单项选择题
I will not endlessly question whether I really ______ my title and my pay.
A．reserve
B．conserve
C．deserve
D．preserve
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