--- Mum, could I play with my classmates for a while after I finish my homework?
题型：不详难度：来源：
--- Mum, could I play with my classmates for a while after I finish my homework?
--- _______. But you must come back before supper.| A．Yes, you can | B．Yes, you could | C．No, you can’t | D．No, you couldn’t |
|
答案
| A |
解析
| 本题答语的含义是晚饭前你必须回家，根据答句的含义应该是对问句的肯定，could构成的的一般疑问句，回答是不在拥有委婉礼貌的语气，不在用could，而应该用can，故本题选A。 |
举一反三
—Look at the man in the classroom! Is he Mr. White?
—No, it __________be him. He’s eating in the dining hall.| A．can’t | B．mustn’t | C．may not | D．needn’t |
|
| Could I look at your picture? --Yes, of course you ______. |
－Look, your sister is playing the piano over there.
－She ______ be my sister. She has gone to America.| A．mustn’t | B．can’t | C．shouldn’t | D．may not |
|
－Must we leave now?
－No, we ________. We still have two more hours.| A．can’t | B．mustn’t | C．needn’t | D．shouldn’t |
|
| We ________ like to thank the honest boy. |
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