“Must I do the work right now Mom?” “No you . You may do it tomorrow.”A. mustn’tB. must

问题补充：

“Must I do the work right now, Mom?” “No, you . You may do it tomorrow.”

A. mustn’t

B. must

C. needn’t

D. shouldn’t

答案：

A. mustn’t

B. must

(答案→)C. needn’t

D. shouldn’t

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