40.-What do you think of the book?-
A.It's six dollars B.I'm a nurse C.I bought it D.Pretty good
39.- to give the letter to Mr. Wang.It's very important.
-No.1 won't.
A.Remember B.Don't forget C.Be sure D.Make sure
38.-How was your vacation?
-Pretty good.We the history museum.
A.visit B.visits C.visited D.were visiting