单项选择题

We adopted the new methods with a view to _______ our efficiency.

A．raise
B．raising
C．rise
D．rising
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单项选择题
The twin brothers are almost identical in ______ , so you can't tell them.
A．look
B．looks
C．outlook
D．face
单项选择题
_______ , we went swimming in the lake.
A．The day being very hot
B．It was a very hot day
C．The day was very hot
D．Being a very hot day
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