摘要: What are you doing? I’m-.
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—What are you doing? —I'm the key to the door.
A. finding out B. looking after C. looking for
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—What are you doing?
— I’m looking ___ the children. They should be back for lunch.
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— I’m looking ___ the children. They should be back for lunch.
| A.after | B.at | C.for | D.up |