—People in Southwest China have never experienced _____ natural disaster．
—Exactly．Let's do our bit to help them．
| A．a more severe | B．the most severe |
| C．the more severe | D．a most severe |
My watch _____ at nine o’clock, but now it _____.
| A．was going; stopped | B．went; is stopping | C．was going; has stopped | D．went; stopped |
He did all he could to _______ but nobody noticed him.
| A．draw people’s attention | B．focus his attention | C．draw attention to | D．pay attention |
Many famous hospitals are competing _____ an excellent doctor, who came from the USA last week.
| A．to | B．in | C．for | D．with |
He accidentally _____ he had quarreled with his wife and that he hadn’t been home for a couple of weeks.
| A．worked out | B．made sure | C．led to | D．let out |
—We usually go hiking for vacation. I like it, but I want to try something more challenging this year.
—_____
| A．Cheer up! | B．Like what? | C．Take care. | D．Let’s go. |