выбрать те значения переменных  А и В ,с которыми прямая ax+by=2

a) была параллельно оси х.

b) была параллельна оси у.

c)  не была бы параллельно осям координат

  Закончите предложения. Используйте Past Indefinite  или Past Continuous

1.       David (to come in) __________     when the children (to write) ___________ a dictation.

2.       Mike (to phone) ___________   me, when I (to have) ____________ breakfast.

3.       Mary (to speak) ___________ to me when her little brother (to throw) __________ her bag  out of the window.

4.       We (to meet) ___________ them when we (to stand) ___________ at the bus stop.

5.       She (to buy) ____________ a present for her Granny when I (to see) ___________ her.

6.       When his parents (to have) ___________ dinner Tom (to arrive) __________.

7.       He (to sleep) ___________ when his mother (to come) _____________ back.

8.       A few days later while he (to have) ____________ tea, the postman (to bring) ________ him a letter from his friend.

9.       When the teacher (to come) ____________ into the classroom, the children (to sit) ___________ at their desks.

10.   One day while she (to read) ___________ a book, a big black fly (to sit down) ___________ on her book.

5 пословиц с безличными глаголами безличные глаголы это глагол который производит действие само по себе без действующих лиц.  плизззз помогите плизззззз