1) we will walk
2) She will call you, if she has time
3) I will buy
4) I will go
5) If the class is full, we will find another one
6) won't come
7) are any problems
8) I'll(I will) ask Peter if I see him tomorrow
9) I'll go next week, if I can get a train ticket
10) If I have to, I'll complain to the manager
11) If he sees me here, he'll be very angry
12) Mary will be worried
13) If it snows this winter, we'll go skiing
14) I'll lend them some money if they ask me
15) If you visit Oxford, you'll see some interesting old buildings
(В ответах 2 и 9 тебе не обязательно использовать комму пред "If", она обычно там не ставиться, но если задание этого требует, лучше просто поставить. Это так, может просто блеснёшь умом на уроке)))
1. The postbox is emptied every day.
2. The stamps are postmarked at the post office.
3 The letters were sorted into the different towns.
4 The mail was loaded into the train.
5 The mailbags were unloaded after their journey.
6 The bags were taken to the post office.
7 The letters were sorted into the different streets.
8 The letters are delivered every day
1. Books are taken by me at the library.
2. Our classroom is cleaned by us after the lessons.
3. Newspapers are by the postman every day.
4. American films are showed every Sunday on TV by them.
5. Apples are usually picked by us in September.
6. Disks are used by them for storing information.
7. New planets are discovered by them every day.