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When your great-grandparents (曾祖父母) were young, the world was very different.
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If we want to visit another country or travel around the world, we must have a(n
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---Has Mr. King come back to China ________?---Yes, he has. He has ________ stay
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---Did you ________ the present from Jim?---Yes, but I didn’t ________ it. It wa
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Oh no ! I ________ my book in the lab.A.leftB.forgotC.has leftD.have forgotten