—I wonder how much you charge for your services.

—The first two are free ________ the third costs $30.

A．while  B．until  C．when  D．before

Try to read stories in English and speak in English whenever you can，________ you will see more progress over time.

A．but  B．or  C．and  D．so

Stand over there ________ you'll be able to see the oil painting better.

A．but  B．till  C．and  D．or

He found it increasingly difficult to read，________ his eyesight was beginning to fail.

A．though  B．for  C．but  D．so

John plays basketball well，________ his favorite is badminton.

A．so  B．or  C．yet  D．for

In some places women are expected to earn money ________ men work at home and raise their children.

A．but  B．while  C．because  D．though

They wanted to charge $5,000 for the car, ________we managed to bring the price down.

A．but  B．so  C．when  D．since

Find ways to praise your children often，________ you'll find they will open their hearts to you.(2011·山东)

A．till  B．or  C．and  D．but

Sometimes proper answers are not far to seek ________ food safety problems.

A．in  B．to  C． on  D．after

He was a good student and scored ________ average in most subjects.

A．below  B．of  C．on  D．above