二、单项选择(每小题1分,共15分)
从各题所给的A、B、C三个选项中,选出最佳选项。
21.( )—Where is Tony?
—Oh, don’t you know he _______ to Beijing to see his parents?
A. has gone B. has been C. have been
22.( ) What he said made everyone _______.
A. laugh B. to laugh C. laughing