The reason______ he gave for being absent from school was ______ he had to attend his sick mother at home.
— Why weren't you at the meeting? — I ________ for a long distance call from my sister in America.
We have done things we ought not to have done and ________ undone things we ought to have done.
Paper produced every year is ________ the world’s production of vehicles.
The two ladies are ________ the same age, but there seems to be ten years ________ them.
I planned ________ to see you last week, but I was ill.