22. Mike lost his key.  _____ couldn’t go into his room. 

A. He    B. She    C. His     D. Her

23. – Shall we go to the City Museum this Sunday evening? 

   – We have to make it another day. It is closed _____ Sunday evening.

    A. at      B. on     C. in     D. from      

24. The story is quite interesting, _____ it’s a little too long.

    A. and          B. or     C. but     D. so