16. He often knocks our books off the desk when he ________ the desks.
A. past B. walks C. passes D. walks pass
17. I don’t think my hair is as long as yours, yours is ________.
A. longer B. shorter C. long D. short
18. When I ________ something, I always go to my best friend, May.
A. worry B. worry about C. worries D. worried
19.－________? －He’s friendly and helpful.
A. What’s he like? B. How’s he?
C. What’s he? D. What does he like?