----Where is Mr Brown? I have some questions to ask him. ----He ______the office.A．has been to B．has

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• —I wonder how long you _____ in Hawaii.—Just for the weekend, then I had to attend a conference in L
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• —I’m sure Andrew will come out first in this gymnastic competition.—I think so. He ______ for it for
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• —Miss wang once art at Bardon School for ten years and now is a singer. —No wonder I often hear her
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• Some of the heat near the surface of the earth _____ electricity.A．is used to makingB．are used for m
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• Iin the house whichbooks and magazines.A．am used to live;use to keepingB．used to live;has been used
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