关于英语练习题,求详解

关于英语练习题,求详解
1.-susan,will you please help me find that old coat?
-_____
A.What for B.What is it C.Is that right D.What time
我选C（正确答案：A）
2.It was on ___ Monday morning that she heard the news that she had been admitted by ___ famous university.
A.the; the B.the;/ c.a;/ D.a;a
我选A（正确答案：D）
3.The sky ___ after lunch and we went fishing by the river.
A.is cleared B.cleared C.was cleared D.had cleared
我选C,这题不太确定是蒙的（正确答案：B）
4.I can't decide exactly____ one would be more suitable for the job.Both of them are excellent.
A.that B.whether C.which D.what
这题我选的D,我记得以前好像老师说：三者或三者以上用which,两者用what.
（正确答案：C）