问题
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I would have told him the answer had it been possible, but I ______ so busy then.A.amB.wer
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Nowadays most people decide quite early what kind of work they would do. When I was at school, we had to choose (11 ) when we were fifteen. I chose scientific subjects. "In the future , scientists wi
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Not knowing he had______out with his girl friend, I made the mistake of inviting them both
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Knowing that I had been out of work now they were
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Knowing that I had been out of work now they were
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This book has been in the works so long that I have lost ______ of most of the sources fou