ответ: 1) arrives 2) won’t become 3) win 4) had left 5) found 6) had come 7) rings 8) will be 9) wouldn’t have happened 10) are 11) aliens sun humans diseases Earth 12) planets humans gravity diseases astronaut
Объяснение: после if ставится глагол в или настоящем времени (даже если речь о будущем, пишем все равно в настоящем: if I pass this exam = если я сдам этот экзамен). If I HAD done smth = если БЫ я что-то сделал
1.) C. arrives
2.) B. won't become
3.) A. win
4.) A. had left
5.) A. found
6.) A. had come
7.) A. rings
8.) A. will be
9.) A. wouldn't have happened
10.) B. are
11.)
1. Do you think that aliens from another planet will visit us?
2. The sun is our nearest star.
3. Humans might become extinct if the Earth becomes hotter.
4. People with serious diseases usually have to go to the hospital.
5. The Earth is our planet.
12.)
1. Mars and the Earth are planets that go round the sun.
2. Humans have created many useful inventions, like the computer and the mobile phone.
3. If you drop something, it falls because of gravity.
4. In the future diseases might become resistant to antibiotics.
5. If you become an astronaut, you'll have to spend a long time in space.