Mark needs to learn Chinese _______ his company is opening a branch in Beijing.

The famous scientist grow up________ he was born and in 1930 he came to Shanghai.

While _________, people sometimes can’t help buying something they don’t really need.

________ difficult it might be, I will try my best to work it out.

---It’s said that Williams will come to help us.
---       we depend on him, we have to do most of the work ourselves.

____ printed, this science fiction will be popular among the students.

The man put out the cigarette when _______ that smoking was not allowed on the train.

______ well, you need to have a good sense of balance.

______ around the Water Cube , we were taken to see the Bird’s Nest for the 2008 Olympic Games.

--- Who should be responsible for the accident?
--- The boss, not the workers. They just carried out the order _______.