I once lived in a house _______ roof has fallen in.
| A．which | B．that | C．what | D．whose |
They________to Tibet many times．
| A．are |
| B．were |
| C．have been |
| D．has been |
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