A. maintain B. supply C. support D. answer

23. Many issues ________ at the meeting by the time you arrived. A. had been raised B. have been raised C. raised D. are raised DẠY KÈM QUY NHƠN OFFICIAL 24. Many important but rare animal species ________ in the Amazon. A. is found B. are finding C. are found D. finds 25. Twenty civilians ________ in the bomb explosion. A. killed B. be killed C. werekilled D. was killed