__________ English has changed a lot over a long time and __________ English spoken between about AD 450 and 1150 was quite different.
It was 1995 __________ we began to develop the new computer system.
He is _________ to have gone abroad,for I haven’t seen him for weeks.
As a teacher, I seldom give my students so difficult a problem_______ they can’t work out.
---Mum, I climbed to get the Teddy Bear from the top of the shelf. ---My goodness! You _______ yourself. You _____ do that again next time.
The early pioneers had to many hardships to settle on the new land.