31.You _____return the book now.You can keep it until next week.（94广东）
A..can't B.mustn't C.needn't
32.You are very ill,so you _______ stay in bed for a week.（98广东）
A.Can B.need C.must
33.I'll give the letter to her _______ she comes back.（2000茂名）
A..as soon as B.before C.since
Tom was born ______ May 3rd,1985.（2000广东） A..in B.at C.on
34.Can you let me ________home a little earlier?(97广东)
A..go B.going C.to go
35.The teacher told us _________ in the street.（96广东）
A..not to play B.not play C.don't play