I. Does Lena usually prepare her homework at the institute? - - No, she doesn't. As a rule,
she works at home. — And what she is writing now? -Oh, she is writing an
article for our wall newspaper.
2 Do You want to see my father? - Yes, I do
3 Michael knows German rather well. He wants to know English, too, but
he has little time for it now.
4 Where Tom and Nick are now? — They have a smoke in the garden.
5 We have an English lesson now.
6 What are you doing here now? - - We are listening to tape-recordings.
7 Who that man was who was standing in the doorway? - - You haven't recognized him? It was John, my cousin.
8 I am not having time no time now, I am having dinner.
9 Your family left St. Petersburg in summer? - Yes, we always go to the
sea-side. We all like the sea. Mother stays with us to the end of August, but
father returns much earlier.
10 What magazine you read? - - It is a French magazine.
1. You will be tired if you don't sleep.
2. It will not be possible if they support us.
3. If you help me, I will give you a lot of money.
4. She will not be slim if she doesn't stop eating so much chocolate.
5. If we sing some carols, they will be happy.
6. Robert will read the whole essay if he likes it.
7. He will not get a better job if he doesn't pass that exam.
8. If you don't exercise and eat healthy, you will put on weight.
9. They will buy some popcorn it they go to the cinema.
10. If he go to the gym, he will get quite muscular.
11. If we don't protect the white dolphins, they will become extinct.
Объяснение:
Тут в каждом предложении будущее время (The Future Tense), по правилу после if мы обязательно должны за месть будущего времени использовать самое обычное(The Present Simple Tense). Вот и всё.
Відповідь:
1 the first sketches of submarines were made in the late 1400s by Leonardo da Vinchi
2 Billions of dollars are spent on building submarines by countries today
3 the first real submarine was built in 1890s by people
Пояснення: