In general，she is devoted to her studies，but she be little naughty at times.
A. will
B. can
C. should
D. would
网友回答
A. will
(答案→)B. can
C. should
D. would
解析：B 考查情态动词。句意：总体上说，她是致力于学习的，但是有些时候她可能也有点调皮。can用在此语境下用来描述一种客观上的可能性。如：It can be warm in winter.。