Question

--- Oh, my goodness! My laptop must have got stolen．
--- But where _____ a thief have entered the house with all the doors and windows still locked?

1. A.
   should
2. B.
   could
3. C.
   dare
4. D.
   did

Answer 1

B
考察情态动词。should 应该；could 能够；dare动词，敢，常和to搭配； did，一般过去时态，助动词。句意：哦，我的天哪！我的笔记本电脑一定是被偷了。——但是在所有的门窗都仍锁着的前提下，贼怎么能够进入房子？故选B。