－Jim, how about keeping a dog as a pet?
－Good idea! but I prefer to have a cat. The dog is _____ to look after.
| A．difficult | B．more difficult |
| C．most difficult | D．the most difficult |
Most of the young people can hardly speak any Chinese，________?
| A．can he |
| B．can’t he |
| C．can they |
| D．can’t they |
He likes watching the children________football．
| A．play |
| B．to play |
| C．playing |
| D．plays |
—Why were you late for school?
—Because my bike________on the half way．
| A．broke down |
| B．broke off |
| C．turned down |
| D．turned off |
The teacher________the office for a few minutes when we arrived．We didn’t meet him．
A．have left
B．had left
C．had been away from
The boy________his mistake before his teacher told him．
| A．realizes |
| B．has realized |
| C．had realized |
| D．would realize |