单项选择题

We must ______ a solid foundation for the development of our heavy industry．

A．take
B．put
C．lay
D．raise
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单项选择题
They are nice boys and I’m sure you’ll______them very well．
A．catch up with
B．go up with
C．come up with
D．get on with
单项选择题
Whose idea was it to go to the opera I suggested ______ .
A．go
B．to go
C．that go
D．going
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