— I rang you at about nine, but there was no reply.
— Oh, that was probably _____I was seeing the doctor.

He was inspired to start again ________ he had failed.

People in Shaanxi are proud of          they have achieved in the past ten years.

But when I got ____ the town ought to have been, all I found was a gas
station.

In the past few years, My Heart Will Go On was a popular song among
young people, ____ were often heard singing it at parties

He has been talented at designing and creating things ________ he was young.

Talk to anyone in this country ________ you will find education and food safety are the problems of top concern.

When I see you, the world stops ____ the only purpose in life was for me to please you．

      we completely differ from each other in character，we are still great friends .