--- Why is Jenny still standing there? It’s so cold.
—She for someone.
A. can wait
B. might have waited
C. must be waiting
D. should have waited
网友回答
A. can wait
B. might have waited
(答案→)C. must be waiting
D. should have waited
解析：考查情态动词中时态的使用。根据上文可知是在描述现在的动作，因此用情态动词+进行时，同时考查情态动词的含义，表示有把握的推测用must。