I. 单项选择（20分）
1. ［09泸州中考］—Would you like to join us in the game?
—________, but I have to help my mum.
A. I will B. I’d love to
C. I’m afraid not
【解析】选B。当不能接受邀请时, 可以用“I’d love to, but. . . ”来委婉地拒绝邀请。
2. ［10河北中考］Let’s play table tennis ________ Tuesday morning, shall we?
A. on B. in C. to D. at
【解析】选A。具体到某一天的上午、下午、晚上时用on, 故选A。
3. I’m sorry I _______ go to the movies with you this evening. I have to babysit my sister.
A. can’t B. needn’t
C. mustn’t D. shouldn’t
