问题补充：
The little boybe very naughty, but he is very lovely.
A. must
B. should
C. can
D. shall
答案：
A. must
B. should
(答案→)C. can
D. shall
解析： 考查情态动词，must必须，should 应该，can 有时候可能会，shall 将，句意：这个小男孩有时候会非常顽皮，但是他非常的可爱。所以选C。
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