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            • 1．
              Children won't put on weight easily if they _____ to eat fruit and vegetables.

              A. persuade
              B. were persuaded
              C. will be persuaded
              D. are persuaded
              难度：较易
              解析 收藏 试题篮
            • 2．
              — Can you tell me what time the flight to Detroit leaves?
              — I'm sorry, but it ____ due to the fog.

              A. has been canceled
              B. had been canceled
              C. has canceled
              D. had canceled
              难度：较易
              解析 收藏 试题篮
            • 3．
              A lot of tents, drinking water and food _____ to the homeless earthquake survivors in the past several weeks.
              A. are sent
              B. were sent
              C. have been sent
              D. had been sent
              难度：较易
              解析 收藏 试题篮
            • 4．
              This new method of teaching _____ for the time being in our school. It will be carried out all over the city.

              A. is experimenting
              B. is experimented
              C. is being experimented
              D. has been experimented
              难度：较易
              解析 收藏 试题篮
            • 5．
              We can't move in the new house now because it _____.

              A. has been painted
              B. was painted
              C. is being painted
              D. is painted
              难度：较易
              解析 收藏 试题篮
            • 6．
              — What is that noise?
              — Oh, I forgot to tell you that the new machine _____.

              A. was tested
              B. will be tested
              C. has been tested
              D. is being tested
              难度：较易
              解析 收藏 试题篮
            • 7．
              People begin to know that most environmental problems exist because necessary measures for preventing them _____ taken in the past.

              A. are not
              B. were not
              C. hadn't been
              D. wouldn't be
              难度：较易
              解析 收藏 试题篮
            • 8．
              After the argument, he spoke with the department manager and the problem _____. 

              A. solving
              B. had been solved
              C. was solved
              D. solved
              难度：较易
              解析 收藏 试题篮
            • 9．
              Travelers _____ that they should bring their ID cards with them.

              A. have reminded
              B. are reminded
              C. were reminding
              D. had been reminded
              难度：较易
              解析 收藏 试题篮
            • 10．
              Many students believe the choice of their courses and universities should ____ their own interest.

              A. be based on
              B. base on
              C. be basing on
              D. base at
              难度：较易
              解析 收藏 试题篮
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