单项选择题

To keep ______ , we must do more outdoor exercises.

[A] well
B. fine
C. fit
D. health
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单项选择题
What is the man going to do
[A] He is opening a company.
[B] He is getting married.
[C] He will be back to Australia.
单项选择题
It’s quite difficult ______ whether Joe will be fit for the job.
[A] see
B. to see
C. seeing
D. to be seen
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