1.
regard作"关于"讲时的用法
算了...选择题打出来吧:
XX was called in by the police to answer questions ___ disappearance of XXX,....
A.with regards to
B.regarding

2.
He said that very clearly that nobody was in any ___ about what was meant.
A. doubt B. wonder

3.
-I am sorry to hear your failing in the exam.
-___.
A. You do not have to
B. Thank you very much
C. Oh, it is nothing serious

4.
I thought her nice, the first time I saw her.
以及
Only when you realize the importance of E,can you study it hard.
这两句中的","到底是什么意思?我熟悉的是没有逗号的两句,是不是加了没加都一样行得通?那为什么要加呢?

XX was called in by the police to answer questions ___ disappearance of XXX,....
A.with regards to
B.regarding
选B。因为regard在此句中为现在分词作定语。而短语“关于”为with regard to没有s
2.
He said that very clearly that nobody was in any ___ about what was meant.
A. doubt B. wonder
doubt为怀疑，在此处为名词。而wonder做名词只有“奇迹、奇观”等意思，作为动词有“想知道”的意思。
3.
-I am sorry to hear your failing in the exam.
-___.
A. You do not have to
B. Thank you very much
C. Oh, it is nothing serious
此题考的是交际用语。如
—Your new shirt is very beautiful!
--Thank you.
而不能说just so so.
如果wonder有名词“疑惑”的意思,也应用wonder at，不用wonder about。前两天做过一道单选：
Carol said that the work would be well done by the end of October,__personally I wondered completely.
A.which B.at which C.in which D.about which
选第二个，不是第四个