4.I’ve been staying in New York_____ two weeks.

3.The baby has been sleeping_____ 2:00 a.m.

2.Sarah has been living here_____ 1996

1.He’s been waiting for you_____ two hours.

10.Thank you for _____(tell) me the truth.

9.If you know his telephone number,please let me _____ (know).

8.When I was twelve,I_____ (start) to play tennis.

7.He’d like_____(collect) shells because they are beautiful.

6.The young man ______(skate) since he was eight years old

5.－ How long____you_____(do) that?－For about four years.