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1. The air in the city _______ with traffic fumes
A. heavily is polluted B. polluted heavily C. is heavy polluted D. is heavily polluted
2. Have you ever met the man ________ over there?
A.stands B. is standing C. who is standing D. standing
3.Scientists say that if people see a UFO, it _______ an aircraft
A. should be B. might be C. must be D. would be
A. heavily is polluted B. polluted heavily C. is heavy polluted D. is heavily polluted
2. Have you ever met the man ________ over there?
A.stands B. is standing C. who is standing D. standing
3.Scientists say that if people see a UFO, it _______ an aircraft
A. should be B. might be C. must be D. would be