（ ）（5） Let’s ____ our class !
A. to begin B. begin C. begin to
I want three ______ of sweets.
A. boxB.boxsC. boxes
_____ did you do at nine o’clock on Saturday?
-----:I read a book .
A. WhereB. What C. How
Yesterday I went to ______ school.
A.Sam’s and Jim’s B.Sam and JimC.Sam and Jim’s
I didn’t win the game ,I feel _______.
A.pleased B. happy C.sad
Thirty girls and fourty girls are_______girls.
A. seventy B.seventeenC.eighty