单项选择题


A．Thus
B．whether
C．Hence
D．However
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单项选择题
I am sure you'll have no difficulty ______ the examinations since you study hard.
A．to pass
B．of passing
C．in passing
D．past
单项选择题
______ the problems, the leaders should take the following points account.
A．When considered
B．While considering
C．Consider
D．Having been considering
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