. “Your phone number again？ I _____ quite catch it.” “It’s 4331577”
| A．didn’t | B．couldn’t |
| C．don’t | D．can’t |
—What do you think made Liz so upset?
—__________ her new bike yesterday.
| A．Lose |
| B．Lost |
| C．Losing |
| D．Being lost |
With the time __________, our happiness grew.
| A．goes by |
| B．going by |
| C．has gone by |
| D．had gone by |
When he was 20 years old, he __________ doctor in the village.
| A．become |
| B．turned |
| C．grown |
| D．changed |
With the popularity of smartphones, the micro blog __________ a good platform for the young to show themselves gradually.
| A．becomes |
| B．has become |
| C．is becoming |
| D．became |
—What worried him so much?
—His hair is __________ grey.
| A．going |
| B．becoming |
| C．turning |
| D．staying |