The modern history of Italy dates from 1860, ______ the country became united.
| A．when | B．if |
| C．since | D．until |
When do you think we will leave tomorrow? You had better __ ready at seven o’clock.
| A．to be | B．be | C．being | D．been |
___ he said was quite surprising.
| A．That | B．What | C．Why | D．How |
___ entered the classroom when the bell rang.
| A．We hardly had | B．Hardly had we | C．Hardly we had | D．Had we hardly |
We visited a factory __ makes toys for children.
| A．where | B．which | C．in which | D．at which |
The reason why he was late was ___he had taken a wrong bus.
| A．because | B．whether | C．because of | D．that |