1. I have been waiting for one hour.
2. The boy has been playing foonball since 10 a.m.
3 Her sister has been doing her homework for half an hour.
4 John has been talking too much
5 We have been studying since 11 oclock
6 Mary has been feeking a little disappointed
7Jack has been exercising lately
8 They have been working at that company for two years
9 I had had before breakfast I went to shool
10 He went to meed his friends after he had done his homework
11 By 0 o'clock the rain had stopped
12 Alice was late because she had missed the bus
13 She went to the post office after she had written the letter
