The book didn’t children probably because the author employed too many scientific terms in it.
I can hardly imagine Peter ____ across the Atlantic Ocean in five days.
I wish I ____ clever enough to work out the ____ geometry problem.
If I ____ more about diamond, I ____ cheated by that man.
Some of you may have finished unit one, _____, you can go on to unit two.
The incomes of skilled workers went up. ______, unskilled workers saw their earnings fall.