21.I couldn't make out what they were saying, for they spoke to me ____.

　　A.right away

　　B.all the time

　　C.in all

　　D.at once

　　22.----Car 17 won the race?

　　----Yes, but its driver came close to ____.

　　A.having been killed

　　B. have been killed

　　C.be killed

　　D. being killed

　　23.What color is it ____you have painted your house?

　　A. what

　　B. where

　　C. which

　　D. that

　　24. ---- ____your car here, or you've got to be fined.

　　----But where on earth can I park?

　　A.Park

　　B.Don't park

　　C.Parking

　　D. Not parking

　　25.---- Shall I buy this book for Tim?

　　----____. He might already have it.

　　A.I don't agree

　　B.No problem

　　C.You can't do that

　　D.You'd better not