Our English teacher is considerate, helpful, and warm-hearted, but sometimes she
Be angry at our silly mistakes.
A. should
B. can
C. must
D. shall
网友回答
A. should
(答案→)B. can
C. must
D. shall
解析：考查情态动词用法。Can表示一种客观的可能性，但是不一定会发生。句意：我们的英语老师很体贴，乐于助人，热心肠，但是有时候她可能对愚蠢的错误生气发火。