The Tibetans __________ in the Himalayas for centuries and have adjusted to the conditions at________.

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• 1Up to now, large quantities of food ____ to Africa to save the starving people.

  A.is sent

  B.has been sent

  C.have been sent

  D.are sent

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• 2By the time you get to Beijing tomorrow, I ______ for Shanghai.

  A.am leaving

  B.should have left

  C.will leave

  D.will have already left

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• 3The vegetable looking fresh in his field ______well. It's often sold out immediately it appears in the market.

  A.has sold

  B.has been sold

  C.is sold

  D.sells

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• 4Luckily good things _________ here to save local wildlife.

  A.are doing

  B.are being done

  C.had been done

  D.will do

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• 5---Why did you stop writing? --- I _____ my writing paper.

  A.ran out of

  B.have been used up

  C.have used up of

  D.have run out

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• 6–-My TV set doesn't work, the water tap is dripping and my car is still under repair! –-You sure ________ bad luck these days.

  A.are having

  B.will have

  C.had had

  D.had

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• 7The new library building _____ last week.

  A.was completed

  B.is completed

  C.completed

  D.has completed

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• 8—Is Paul playing basketball for his school? —Well,he________ ,But he has given it up and switched to playing volleyball.

  A.is

  B.was

  C.has

  D.had

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• 9–A boy was killed by the tiger in the zoo. –He was believed__________ into the cage while feeding the tiger without permission.

  A.to fall

  B.to be falling

  C.to have fallen

  D.having fallen

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• 10—I counted sheep, I drank milk and I tried everything, but nothing helped. —It seems you _____ too much recently. Try some sleeping pills.

  A.worked

  B.will be working

  C.had worked

  D.have been working

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