1.--Sorry,Rebecoa,I'm too busy ,for I have a long report(B).
--That's OK.I'll ask Mary to do me a favor.
A.typed B.to type C.be typed D.typing
2.Today,no matter whether you are male or female ,you have (B)lots of pressure.
A.undertaking B.undertaken
C.undertake D.to undertake
3.No matter what difficulties you free,you shuold try to overcome them in order to have your task(B)
A.complete B.completed C.completing D.to completed
麻烦每个选项的用法都说说》..
have的具体用法分析..