—Sorry Mum I lost my key to the bicycle again．—Oh! How you be so careless! You have to le

问题补充：

—Sorry，Mum, I lost my key to the bicycle again．

—Oh! How you be so careless! You have to learn to look after your belongings．

A. can

B. may

C. must

D. dare

答案：

(答案→)A. can

B. may

C. must

D. dare

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