ПОМОГИТЕ ПОЖАЛУЙСТА
8 КВАДРАТНЫХ СМ и 25 квадратных мм =   квадратные милиметры

join the sentences

К примеру I asked for an alarm call. I went to bed. (before)............ I had asked for an alarm clock before i went to bed

1.We arrived at the airport. We rented a car. (when)

2.I got the message. I called her back. (as soon as)

3.They got there. The museum had closed. (by the time)

4. First she unpacked. Then she called room service. (after)

 Fill in the gaps. Use was or were.

1.    I ... in the park yesterday.
2.    It ... cold last month.
3.    We ... busy yesterday.
4.    You ... late for school yesterday.
5.    They ... happy yesterday.
6.    Where ... you last summer?
7.    He ... your friend, ... he?
8.    ... you tired yesterday? Yes, I was. 

Вычислите массу фосфора, который надо сжечь в кислороде для получения оксида фосфора (V) массой 40г