问题
填空题
用 for 或 since填空。
1. He's been waiting for you ______ two hours.
2. John has been living here ______ 2008.
3. I've been staying in London ______two weeks.
4. Jack has been studying French ______ he was mine.
5. I slept only ______ two hours last night. Now I feel very tired.
答案
1. for 2. since 3. for 4. since 5. for