题目内容

His____is successful .

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

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He is one of the ____who support the theory.

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

Theteacherwasangryatmy____late.

A. coming
B. come
C. comes
D. came

His____ madethesituationworse.

A. arrival
B. arrived
C. arrives
D. arriving

The method is ____to me .

A. help
B. helpful
C. helping
D. helps