题目内容
II. 用 since 或 for 填空
1. Tom and his sister have waited for us three hours.
2. We have lived in the town two years ago.
3. Maria has been in Shanghai she was four.
4. They’ve been away some time.
5. The film has been on one and a half hours.
II. 1. for 2. since 3. since 4. for 5. for
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