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1 but they havent replied yet.

2 but you havent done it.

3 but he hasnt given it back.

4 but he hasnt found it.

5 but he hasnt given it back.

6 but she hasnt returned yet.

7 but I havent returned it.

8 but I havent changed them yet.

9 but the bus hasnt come yet.

10 but he hasnt learnt it yet.

1 - I've written to them three times, but they haven't replied yet.

2 - I've asked you again and again but you haven't done it yet.

3 - I lent him 10 last month but he hasn't given it back yet.

4 - He lost his pen a week ago but he hasn't found it yet.

5 - He borrowed my book last year but he hasn't given it back yet.

6 - She went to New York six months ago but she hasn't returned yet.

7 - She gave me 2 a week ago but I haven't returned it yet.

8 - I finished reading my library books a long time ago but I haven't changed them yet.

9 - She went to the bus-stop half an hour ago but the bus hasn't come yet.

10 - He's still studying that lesson but he hasn't learnt it yet.