Question

用for 或 since完成下列句子

1. She has been there ________ three days.

2. Jack has been here ________ Tuesday.

3. It has been raining ________ an hour.

4. I've known Sue ________ two years ago.

5. I have had this camera ________ 1989.

6. Liz has been studying medicine at university ________ three years.

7. Dave has been started playing the piano ________ he was seven years old.

 

Answer 1

答案：1. for 2. since 3. for 4. since 5. since 6. for 7. since