He must be helping the old man to water the flowers, ?A. is he B. isn’t heC. must heD. mus

发布时间：2020-08-16 08:43:24

He must be helping the old man to water the flowers,     ?
A. is he
B. isn’t he
C. must he
D. mustn’t he

网友回答

A. is he
(答案→)B. isn’t he
C. must he
D. mustn’t he
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