CHỈ CÓ 5 CÂU TRẮC NGHIỆM, PHẢI GIẢI THÍCH 21. She should avoid ..................... other peoples feeling. A. hurting B. to hurt C. hurt D. hurts 22. The soil needs ................................. immediately. A. fertilize B. to fertilize C. fertilizing D. fertilized 23. They advise me .......................... a raincoat. A. wear B. to wear C. wearing D. wore 24. You need ...................... these plants as soon as possible. A. fertilize B. to fertilize C. fertilizing D. fertilizes 25. You'd better .................... what you think in front of the conference. A. say B. to say C. saying D. said