21. ---Do you mind if I use your dictionary?
---_________.
A. Yes, help yourself B. Yes, use it, please
C. No; enjoy yourself D. No; go ahead
22. _____is known to everybody that the moon travels round the earth once every month.
A. It B. Which C. That D. What
23. You can’t correct your mistake unless you have the _______ to admit it.
A. bravery B. strength C. courage D. power
24. The girl read the letter with tears _________ down her cheeks.
A. ran B. running C. run D. to run
25. If tourists had known the tsunami was occurring suddenly, they _________ to the coastlines for Christmas holiday.
A. wouldn’t come B. wouldn’t have come
C. had come D. didn’t came
26. ---This is the seat for the disabled.
--- Oh, sorry. I _________ that.
A. didn’t realize B. don’t realize
C. haven’t realized D. hadn’t realized
27. --- Didn’t you find the film exciting?
--- __________, I nearly fell asleep half way through it.
A. On the way B. In general
C. On the contrary D. In that case
28. __________ to reach them on the phone, we sent an email instead.
A. Fail B. Failed C. To fail D. Having failed