Tom () his homework yesterday,because he was in hospital all day.A.can't finish B.couldn't finish C.couldn't have finished D.mustn't finish选哪一个呢?我也选的C，但是是感觉。

When did Tom does his homework?改错 Tom does not do his homework 祈使句 Did Tom finish ___(do) his homework? Let Tom does his homework now When did Tom does his homework改错 Tom can do his homework ___ (he). 把Tom does his homework carefully改为感叹句注：改为（ )（ )Tom( )his homework! Tom does his homework at night 改为正在进行时 Tom（） （） his homework now Is Tom busy with his homework?改写句子句意不变（ ）Tom busy ( ) his homework? 是Is Tom going to do his homework?还是 Is Tom going to does his homework? Tom dose his homework the most carefully in his class.(同义句)Tom does his homework .carefully..all his classmate. Tom is buys doing his homework.改为同义句 Tom is____ ____his homework. Tom does his homework every day划线部分提问(his homework ) Tom must finished his homework before dinner.对finished his homework 划线提问 Tom often does his homework at home.改为否定句 Tom does his homework often dinner改为否定句 tom does his homework after dinner改为一般疑问句 Tom did his homework last night 改否定句