По ! 'm not from bristol
isn't brother and sister
aren't brothers
4 grammar be: negative statements in london
a) use the lists and write negative statements. sisters
3) dan and jo shaw very old
4) sophie and emily
5) the new school
6) dilip and ananda
7) mr and mrs hanson
8) i
9) my friend and i
1. I'll wait here until you get back.
2. Give me a ring when you hear some news.
3. After the TV programme ends, I'll do my homework.
4. Before I go to work, I'll have a bath.
5. While she's in Paris, she'll visit friends.
6. As soon as the lesson ends, I'll go home.
7. I won't leave the house until the postman calls.
8. Can you feed the cats while I'm away?
9. I'll tell you about the holiday when I get back.
10.I'll study English until I speak it perfectly.
По правилам английской грамматики в придаточных предложениях времени и условия с союзами if,when, as soon as, until, before, after, whenever, unless и др. вместо будущего времени употребляется соответствующее настоящее время.
Думаю так)