__________ she couldn't understand was__________ fewer and fewer students showed interest in her lessons.
A. What; why B. That ; what C. What ; because D.
When Chinese people talk about American cities, the first_____ comes into their minds is San Francisco.
| A．city | B．one | C．that | D．of them |
Nearly all educators believe that a challenging situation can often _______ the best qualities of a person.
| A．bring up | B．bring about | C．bring forward | D．bring out |
While watching television，____．
| A．the doorbell rang | B．the doorbell rings |
| C．we heard the doorbell ring | D．we heard the doorbell rings |
I like getting up very early in summer. The morning air is so good____.
| A．to breathe | B．to be breathed |
| C．breathing | D．being breathed |
If you play with electricity，you may get an electric________.
| A．strike | B．beat | C．shock | D．knock |