您要查找的是不是：
- The old man is only picking at his food; he must be ill. 老人只吃一点点东西; 他一定是病了。
- Judging from his face he must be ill. 从他的脸色看,他一定是病了。
- He doesn't come to school, he must be ill. 他没有来学校,他肯定是病了。
- He must be ill, for he is absent. “缺席”不一定是“生病”，只是交流猜测。
- Judging from his face, he must be ill. 从他的脸色看出;他一定是病了.
- He must be ill, for he is absent today. 他一定是病了，因为他今天缺席了。
- He must be ill，for he is absent today. 他一定是病了，因为他今天没有来。
- The old man is only picking athis food; he must be ill. 老人只吃一点点东西;他一定是病了。
- Because Gulliver was a person, the horses thought he must be bad, too. 可是格利佛是人，那些马认为他一定也很坏。
- He gets tired easily; he must be out of shape. 他很容易疲倦，一定是身体有毛病。
- Judge by his accent, he must be from the south. 从他的口音判断，他一定是南方人。
- It follows then that he must be innocent. 那么可见他一定是无辜的。
- He must be on the wrong side of40 by now. 他现在谅必四十开外了。
- Judging by his accent, he must be from the South. 从他的口音判断，他一定是南方人。
- Brian works overtime and has an evening job; he must be coining it. 布赖恩常常加班，并且晚上还有兼职，他一定在发财了。
- He must be getting on for eighty! 他一定快八十了！
- He must be raking in $500 a week. 他一定是一星期赚五百美元。
- Poor thing! He must be feeling awful now. 可怜的人儿！他现在一定不好受。
- Tom was absent yesterday; he must have been ill. 汤姆昨天缺席,他一定是病了。
- His story just doesn't add up he must be lying. 他说的前後不一致--一定撒谎了。
