单项选择题

Mr. Cronin （）all the data this morning

A. updated 
B. is updating
C. updates 
D. has updated

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单项选择题
Jason （）be tired. He went to bed early last night

A. was not able to     
B. need not
C. used to         
D. cannot
单项选择题
The project manager （）hiring new employees next week

A. will be 
B. will
C. had been
D. was
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