I couldn’t help applauding for Liu Xiang’s excellent performance ________ he got the first prize on the stage in the 16th Asian Games.[ ]

It was not until Mum agreed to buy him a computer, _______ was his favorite, _______ the boy promised to study hard.

I don’t understand how you got a ticketI always ______ you ______ a careful driver.[ ]

I work ______ a teacher in No.1 Middle School.

When _________a career, you should consider all the aspects of a job.