6.The bicycle five years ago. 1.was bought 2.was buying 3.has been bought 4.had been bought

7.The film when I came in.

1.discussed 2.was discussing 3.were discussed 4.was being discussed

8.Tickets tomorrow morning.

1.will book 2.were booked 3.will be booked 4.are being booked
Очень надо, буду благодарен)

Peter (was staying) at a seaside hotel on holiday when he (met) his friend.
While I (was having) lunch the sun (came) out again.
Who were you (talking to) on the telephone when I came?
When Mary (was reading) the letter she (noticed) many spelling mistakes.
She (was going) to bed when suddenly she (saw) a mouse.
We (were sitting) down to dinner when the door bell (rang).
Mary’s grandfather (hurt) his back while he (was digging) in the vegetable garden yesterday.
While he (was sleeping), the doctor (arrived).

Питер проживал в приморском отеле в отпуске, когда встретил своего друга.
В то время как я обедал, солнце снова появилось.
С кем вы (разговаривали) по телефону, когда я пришел?
Когда Мэри (читала) письмо, она заметила много орфографических ошибок.
Она (ложилась) спать, когда внезапно она (увидела) мышь.
Мы (садились)  обедать, когда раздался звонок в дверь.
Отец Мэри повредил спину, когда он (копал) огород вчера.
Пока он (спал), врач (прибыл).

Areas with no source of electricity remain in darkness until the
comes up, because street lights need a power supply. British firms offer new appliances, such as solar-powered street lights. They work by using energy accumulated during the day from a solar panel. The batteries are being charged during the day and then it's power is used for lighting. The system can be used for one individual light or a number of them. In the south of Saudi Arabia a motorway tunnel miles from any power supply is lit day and night by solar-powered devices. The advantages of sun-powered lamps are
that they can bring light to areas distant from any other power supply and that they do not pollute the environment.