My chest _____ when I take a deep breath, doctor.
| A．hurts | B．wounds | C．harms | D．injure |
Why do you always drive to work _______ you could easily take the bus?
| A．because | B．though | C．once | D．when |
Most people are in favor of the _______ against smoking in public places.
| A．collision | B．negotiation | C．prohibition | D．discrimination |
Perseverance is a kind of quality, and that’s ______ it takes to do anything well.
| A．what | B．that | C．when | D．why |
The price of agriculture products _______ since the beginning of last year.
| A．is going up | B．had gone up | C．went up | D．has been going up |
Our monitor is always ready to help others. He is really ______ Lei Feng in our class.
| A．a | B．the | C．an | D．不填 |