Диагонали ромба относятся как 8:15 , а его площадь равна 240 см в квадрате.Найдите периметр ромба.

Choose the right option and fill in the gaps.
1.You shouldn’t be rude to people who are trying to help you. … advice if you don’t like it, but behave yourself.     a)ignore               b)deserve                 c)confess                      d)follow
2.Nobode except us knew about the plan. It means that the person who …us is here in this room.
a)had betrayed               b)betray            c)has betrayed               d)was betrayed
3.I envy her because she is so good at languages. She … Italian for only a year and can already speak it perfectly.     a)have been learning     b)had learnt     c)has been learning         d)was learning
4.When the fire began, I found out that the door was locked. It was my roommate who … me from the fire.
a)rescued         b)has rescued          c)had been rescuing                   d)rescues
5.Wherever we live and … language we speak we all need friends.
a)whoever              b)however              c)whatever                d)whenever

Choose the right variant of the main verb: Active or Passive Voice.
1) The man (ask) what language I was speaking.
a) was asked                       b) asked
2) I (ask) many questions by my friends after the lesson.
a) will ask                       b) will be asked
3)They (tell) to bring back books every day.
a) are being told             b) are told
4) I think he (find) the address already.
a) has found                      b) has been found
5)This house (build) in the 17th century.
a)was built                      b)is built
6)My mother (do) a lot of work every day.
a)is doing                       b)does

У коробці лежала ціла квадратна плитка шоколаду, складена з маленьких квадратиків. Кирило з'їв усі 20 квадратиків, розташованих уздовж стінок коробки. Скільки маленьких квадратиків шоколаду залишилось у коробці?