高中情态动词练习题 They asked Tom to give up the plan of climbing the

高中情态动词练习题
They asked Tom to give up the plan of climbing the mountain alone ,but he _____
A wouldn’t B couldn’t C shouldn’t D mightn’t
We ____ have heard them when we were in such a noisy crowd
A must B shall C would D need
Anything wrong with the door?
Yes,it ___ shut .
A couldn’t B shan’t C won’t D wouldn’t
He ___ ask too much about her private life as she was sp sensitive about it.
A not dared B didn’t dare C dared not to D dares not to
Dare的情态和实意动词怎么区分?
麻烦说下简单的思路和错项的原因哈!