题目内容
(请给出正确答案)
[主观题]
A) beforeB) aboutC) onD) at
A) before
B) about
C) on
D) at
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A) before
B) about
C) on
D) at
He is a leading authority___plant diseases.
A、on
B、about
C、for
D、of
Theyoungmanlosthisjoblastmonth,butitwasntlonghefoundanewpositioninmycompany.
A)before
B)while
C)as
D)after
He lacked the strength to deal with all these problems.
A.think of
B.talk about
C.copy down
D.cope with
Since his children have all grown up, he has nothing now.
A.to worry about
B.worrying about
C.to be worried
D.worried