问题补充:
You buy a gift, but you can if you want to.
A. must
B. mustn’t
C. have to
D. don’t have to
答案:
A. must
B. mustn’t
C. have to
(答案→)D. don’t have to
解析:句意为,你不必买礼物了,但是如果你愿意的话也可以买。根据句意可知此处须用否定形式,故排除A、C项;mustn’t 表示禁止;don’t have to 意为“不必……”,故选D。
时间:2019-08-31 23:39:42
You buy a gift, but you can if you want to.
A. must
B. mustn’t
C. have to
D. don’t have to
A. must
B. mustn’t
C. have to
(答案→)D. don’t have to
解析:句意为,你不必买礼物了,但是如果你愿意的话也可以买。根据句意可知此处须用否定形式,故排除A、C项;mustn’t 表示禁止;don’t have to 意为“不必……”,故选D。