1.--------in the heavy rain ,the man got wet through and shi

1.________in the heavy rain ,the man got wet through and shivered with cold.
A.having caught B.caught(一直没弄清到底是用完成时还是过去式的现分)
2.The policeman caught yhe theif by ___arm .A.a B.the C./
3.It is reported that more and more people prefer going travelling during the Spring Festival_____at home .
A to staying B.rather than stay (不是prefer to do 后才用rather than do )
4.Today ,we will discuss a number of cases ______beginners of English fail to use the language properly.
A why B where Cwhich(为什么不选A或C?)