Everybody showed great respect to the old doctor, who devoted everything he had to __________ the poor conditions of the local hospital.

“When did he leave the classroom” “He left_______ you turned back to write on the blackboard”

He knows so much about the story. He must have read the book,_____?

At present, the number of the students in the buddy club ________ 65. A number of them _______ in other clubs as well.

I was told that there were about 50 foreign students Chinese in the school， most were from Germany．