题目内容

I ____ an hour or so a day updating my micro blog.

A. cost
B. spend
C. take
D. takes

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Please ____ the registered trademark.

A. balance
B. identify
C. aspect
D. fill

Do you know the____ of the river?

A. depth
B. deep
C. widen
D. wide

His____is successful .

A. operate
B. operation
C. operating
D. operated

He is one of the ____who support the theory.

A. scientists
B. science
C. scientific
D. sciences