单项选择题

He has established himself to be a competent manager by his successfully handling several difficult tasks.()

A. definite
B. effective
C. qualified
D. deficient

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单项选择题
The loss of her cat was the greatest grief the child had known.()

A. trial
B. tragedy
C. misconduct
D. sorrow
单项选择题
It is normal for a teacher to get angry with the student who repeats the same mistake.()

A. useless
B. rare
C. senseless
D. usual
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