(2009重庆32)—Hi, Tom. Any idea where Jane is?—She _____ in the classroom. I saw her there just now.A. shall be B. should have been C. must be D. might have been答案:C解析:考查情态动词。shall be表示“将是”;should have been表示“本应该是,但并非如此”;must be表示“一定是”;might have been表示“可能是,不太确定”。根据“I saw her there just now”可知前句表示非常肯定的推测,故选C。句意:——嗨,汤姆。你知道简在哪里吗?——她一定在教室里。我刚才看见她在那里。