Johny you play with the knife you hurt yourself . A. wont ; cantB. mustnt ; m

问题补充：

Johny , you play with the knife , you hurt yourself .

A. won\t ; can\t

B. mustn\t ; may

C. shouldn\t ; must

D. can\t ; shouldn\t

答案：

A. won\t ; can\t

(答案→)B. mustn\t ; may

C. shouldn\t ; must

D. can\t ; shouldn\t

解析：must 在否定句中表绝对不允许。