—Why ,Jack,you look so tired！
—Well,I___the house and I must finish the work tomorrow
| A．was painting |
| B．will be painting |
| C．have painted |
| D．have been painting |
The spokesman didn’t make clear why the president failed to attend the conference.
| A．this. | B．that. | C．it. | D．what. |
One may never know the of knowledge without being educated.
| A．power. | B．force. | C．energy. | D．strength. |
This is the first time we a film in the cinema together as a family
I mention it I feel very happy.
| A．see; time | B．had seen; for the time |
| C．saw; the time. | D．have seen; the time. |
Tom’s pay depends on the factory.
| A．he plays in what part. | B．he plays what part in. |
| C．what part he plays in. | D．in what part he plays. |
The government has taken some measures to solve the shortage of water, but it may be some time __the situation improves.
| A．since | B．when. | C．unless. | D．before. |