gấp lắm mn ơi help tui 21. He will not be __________ to vote in this year's election. A. old enough B. enough old C. as old enough D. enough old as 22. _______ extended family include several generations living together in the same house. A. A B. An C. The D. Ø 23. The crowd at the basketball game were wild_______excitement. A. for B. like C. in D. with 24. I've tried those tablets and they are not_______in helping me stop coughing. A. effective B. successful C. profitable D. helpful 25. Which is_______, Mount Everest or K2 in the Himalaya? A. higher B. the higher C. highest D. the highest 26. He couldn't reach the goal,_______surprised me. A. who B. whom C. which D. that 27. He will take US to the town __________ we can see old temples. A. that B. which C. when D. where 28. This is the first time I __________ the experiment on plant breeding. A. have done B. do C. would do D. did

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