None of them knew what had happened _________ I told them about it.    

He made a mistake, but then he took action to change the situation ________ it got worse.

The cost of living in Chengdu is among the lowest in China, ________ the quality of life is probably one of the highest.

________ Mary ________ Jack is listening to the report carefully, because they are both interested in it very much.

The cost of living in Chengdu is among the lowest in China, ________ the quality of life is probably one of the highest.

________ Mary ________ Jack is listening to the report carefully, because they are both interested in it very much.

Yesterday morning I was just leaving_______ the telephone rang.

--_______ will the meeting last?
--_______ they reach an agreement.

- What's wrong with you, Madam?
- I've lost my valuable painting. But a week had gone by _______ I knew it was missing.

Susan was reading a newspaper on the train_________ a strange old man come over.