21. ---How did you find TV series?
---________
A. Very fascinating. B. By chance.
C. Don’t you know? D. Don’t worry.
22. At 4:00 next Friday, I ________TV in my room.
A. will watch B. will be watching
C. will have watched D. will been watching
23. You will succeed in the end ______you give up halfway.
A. even if B. as though C. as long as D. unless
24. All the students ______come from America are here.
A. who B. which C. / D. that