| 1. 难度：困难 | |
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Lynn is riding a beautiful bike. I don't know when she ________ it. A.buys B.is buying C.bought D.will buy
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| 2. 难度：中等 | |
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Keep quiet. Mom ________ in the next room. She worked the whole night yesterday. A.slept B.is sleeping C.sleeps D.has slept
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| 3. 难度：中等 | |
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If you don't arrive at the airport on time, you ________ the plane. A.have missed B.missed C.miss D.will miss
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| 4. 难度：简单 | |
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My sister ________ the piano very well, but she didn't have much time to play last week. A.is playing B.played C.plays D.was playing
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| 5. 难度：中等 | |
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Bill didn't answer my phone yesterday afternoon because he ________ a speech at that time. A.gives B.is giving C.gave D.was giving
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| 6. 难度：中等 | |
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Sorry, I need to go to the library now. Lily ________ for me outside. A.waited B.is waiting C.waits D.was waiting
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| 7. 难度：中等 | |
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I ________ my trip to Canada because I lost my passport by mistake. A.cancel B.will cancel C.have canceled D.was canceling
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| 8. 难度：简单 | |
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Henry never gives in when facing difficulties. We all ________ his strong spirit in life. A.will admire B.admire C.have admired D.admired
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| 9. 难度：中等 | |
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Tom joined an English club, and now his English________ a lot. A.has improved B.improves C.will improve D.improved
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| 10. 难度：中等 | |
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You ________ us a lot of pleasure during the days when we were together. A.will bring B.bring C.brought D.have brought
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| 11. 难度：中等 | |
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I ________ sports when my mom asked me to go home. A.do B.did C.was doing D.am doing
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| 12. 难度：中等 | |
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Bruce used to be a top student, but he ________ behind since he lost himself in computer games. A.falls B.fell C.will fall D.has fallen
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