单选题28. We've all been guilty ______ selfishness at sometime in our lives.
单选题28. We are expecting that the days will come soon ______ we will be able to breathe clean air again.
单选题22. There are two major problems linked with atomic power plants, ______ the first concerns nuclear waste.
单选题32. We are looking forward to ______ to the lecture by the famous professor.
单选题 She hadn't eaten breakfast; ______
单选题49. ______ you eat the correct foods ______ be able to keep fit and stay healthy.
单选题21. I don't know the reason ______ she looks unhappy today.
单选题 Referring to reading
单选题31. She missed the train because she had been ______ the traffic jam.
单选题 If you had taken my advice last week
单选题 —It's very kind of you. Thank you very much
单选题28. He didn't keep on asking me for a ride any longer as he had already got his own ear ______.
单选题23. The classroom was almost empty ______ a desk or two.
单选题26. Space vehicles were launched into outer space ______ search of another living planet.
单选题 Dick, something important has happened
单选题 Little Rose did care about her own safety
单选题18. A survey of the opinions of students ______ that they also admit several hours of sitting in front of the computer ______ harmful for one's health.
单选题30. All ______ you can do to comfort her is to listen to her story patiently.
单选题19. The bridge was named ______ the hero who had given his life for the construction of it.
单选题11. Could you tell me ______ to fly from Chicago to New York?