用 Since或for填空。1. I've been practicing the piano 10：30.2. I've been waiting half an hour.3.

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用 Since或for填空。

1. I've been practicing the piano           10：30
.2. I've been waiting         half an hour.
3. He has been living here       1999.
4. Mike has been running       10 minutes.
5. He has been working here       he came here.
6. Jim has been talking with Tom       two hours.

题型：填空题难度：中档来源：同步题

答案

1. since. 2. for 3. since 4. for，5. since 6.for

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用 Since或for填空。1. I&#039;ve been practicing the piano 10：30.2. I&#039;ve been waiting half an hour.3.

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用 Since或for填空。1. I've been practicing the piano 10：30.2. I've been waiting half an hour.3.