8. make sentences using the given words in the correct order: 1. but, we, mean, also, computers, we, quantity, and, high speed, when, a further development of, high technology, speak about not only. 2. electronic circuits, and, in laboratories, reliable, for more perfect, throughout the world, is going on, high speed, a continuous search 3. operates, the ordinary computer, all, operation by operation, are being done, the supercomputer, does, simultaneously, the computations, operations, while, like a brain.​

Bring                brought               brought
clean               cleaned               cleaned
sew                 sewed                 sewn
sing                 sang                   sung
cut                   cut                     cut
ride                  rode                    ridden
buy                  bought                bought
go                    went                   gone
draw                drew                    drawn
do                    did                      done
win                   won                    won
Некоторых форм не хватало, я их добавила, если они не нужны, то могу убрать

They were travelling all night and were exhausted.
We had booked our flight weeks before we left.
They had been waiting for hours before their flight was announced.
Lionel had already been to Nepal twice before he got married.
How long haв you been looking for Jess before you found him?
The guide organised (можно had organised) everything well in advance, so our trip went smoothly.
They had been looking forward to this holiday for years before they finally managed to do it.
It had been snowing for hours and no plane were able to take off.