【C3】A．mustB．have toC．shouldD．had better

If we had enough time to prepare, the result______ much better.A．would beB．would have been

It is one of the best concerts I_____ .A. went toB. had gone toC. have ever been to

You______have been more careful!A．mustB．couldC．wouldD．need

【C3】A．forB．toC．inD．on

You______wear your glasses,for the words are rather small.A．had betterB．had better toC．wou

You’d better（)to hospital at once.A. goB. toC. going