mn ơi giúp em ạ , không càn giải thích chỉ cần đáp án thôi ạ 26. Every staff member ________ to be trained in security procedures to ensure the safety of customer's private information. a. requirement b. is required c. requires d. requiring 27. Our website has a page that _________________ frequently questions asked by its users. a. answer b. answers c. was answered d. answering 28. The benefits of exercising regularly while pregnant ____________staying sedentary during pregnancy. a. surpass b. surpassing c. is surpassing d. surpassed 29. The decision regarding the merger of the two companies_____________ to the public yesterday. a. was announced b. were announced c. announced d. announcing 30. Thanks to the recent anti-smoking campaign, the number of smokers in the country______________ a. has reduced b. reduce c. to reduce d. having reduced 31. The regulations governing animal research _______many provisions to safeguard animal welfare. a. contains b. contain c. have been contained d. is containing 32. Not only the child, but also the grandparents _____________. a. is joining b. joins c. were joining d. has joined 33. The number of people at the exhibit ___________ amazing. a. are b. were c. was d. has 34. None of the information _______________ made public. a. are b. was c. were d. have 35. Neither table nor chairs ____________ here. a. does b. do c. is d. are