1 a (конструкция требует употребления прилагательного, поэтому выбираем слово edible)
2 d (после to используется глагол strengthen)
3 b (со словами, начинающимися с буквы R, используется отрицательная приставка ir-)
4 a (со словами, начинающимися с m или p, используется отрицательная приставка im-)
5 с (safety measures - устойчивое сочетание ("меры безопасности")
6 d (intolerant - нетерпимый)
7 с (imperfect - неидеальный)
8 с (learning - изучение)
9 с (inventions - изобретения)
10 a (economical - экономичный)
11 b (обычно пишется слитно - copartner)
12 d (impolite - невежливый)
13 a (видимо, школьники должны знать только слово helpful... вообще, вопрос некорректный: есть такое слово helpable, хотя не во всех словарях)
14 с
15 b (dishonest)
16 с (Ukrainian)
17 b (inconsistent - непоследовательный)
18 a (be worried about doing smth)
1.
1. Did she help mother yesterday?
2. I go to school every day.
3. What do you usually do in the evening?
4. Tomorrow Mary with her friends will visit a gallery.
5. She was so happy last summer.
6. He broke a table but built new last week.
7. I like eat sweets every day.
8. Jack was very nice and bought his girlfriend flowers.
9. Will they spend next summer together?
10. We didn't want go to school yesterday.
3.
2. The first of these devices was conceived in 1786
3. The father of computer is an Englishman Charles Babbage
4. This machine used the decimal numbers system and was powered by cranking a handle.
5. Is a mechanical device that computed the positions of the astrological signs on any given date, past or future.
6. The abacus was created by the Chinese between 2600 BC and 300 BC.
