On March 8th, a Malaysian plane to Beijing lost contact. The passengers on board are _________Chinese. All Chinese people are extremely worried about their safety.
In Britain, you must reach 18 ________ you want to drive a car.
I'll write a letter to you ________ I arrive in New York.
I told him the news ________he came back yesterday.
—Ring me up ________ you come to my house, will you? —Sure, I will.
You will fail the exam ________ you work hard.