She is a quiet girl at school，but sometimes she _____ be very naughty.
A．shouldB．wouldC．willD．can
D

試題分析:句意：她在學校是個安靜的孩子，但是有時候她也會非常淘氣。A應該；B將要； C將要；D能夠，可能。根據(jù)語境可知她是偶爾淘氣，can可以表示一時的可能性，故答案選D。
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