单项选择题

The man we followed suddenly stopped and looked as if ______．whether he was going in the right direction．

A．seeing
B．having seen
C．to see
D．to have seen
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单项选择题
—Have you watered the flowers —No, but ______.
A. I am
B. I'm going
C. I'm just going to
D. I will go
单项选择题
______ it is for us to see that he does his work so well!
A. What surprise
B. How surprise
C. What a surprise
D. How a surprise
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