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.

The beach ________________ it attracts thousands of tourists every year.

I have to ________ ________ all night because I will have a test tomorrow.

2．我已经做了好多家务活现在我觉得筋疲力尽。

I’ve done much housework and I am very ________.

3．只有我一个人犯错误，我觉得很尴尬。

Only I ________ a mistake, I felt _______.

4．这个人宣布外星人已经在地球上着陆了。

The man ________ aliens ________ ________ on the earth.

5．这个消息是这样的令人信服以致很多人逃离家园。

The news was so ________ that many people ________ from their homes.