头上长草情侣卡通头像:几个英语选择题

Mother was worried because little Alice was ill, especially ___father was away in France.
a. as b. that c. during d. if （a）
为什么不用during?

____ to take this adventure course will certainly learn a lot of useful skills.
a. brave enough students b. enough brave students
c. students brave enough d. students enough brave (c)
这句究竟怎么解释？其中有什么特定的配搭？

She thought I was talking about her daughter, ____ , in fact I was talking about my daughter.
a. whom b. where c. which d. while （a）
为什么不用while，不是表示转折的意思么？

The salesman scolded the girl caught ____ and let her off.
a. to have stolen b. to be stealing
c. to steal d. stealing （d）
the girl不是to steal么，为什么不用caught to do

--You were brave enough to raise objections at the meeting.
--Well, now I regret ___ that.
a. to do b. to be doing c. to have done d. having done （d）
regret doing不是表示后悔已经做过的事，为什么要加having

Don’t all speak at once! ____ .
a. each at one time b. one by one time c. one for each time d. one at a time (d)
why not use b

（答案详解，thank you!）