---It is reported that a Boeing 777-200 plane became lost in communication （失去联系） at midnight __________ the early morning of March 8th．
---I was amazed to hear that．
| A．at | B．in | C．on | D．Of |
---Is the Youth Center open to the public yet?
---Yes. It ______ for almost one and a half years.
| A．has opened | B．has being opened |
| C．has been open | D．was open |
If he ___________ on time, we will go without him.
| A．doesn’t come |
| B．don’t come |
| C．didn’t come |
| D．comes |
By the end of the last match, they _________ two goals.
| A．kicked |
| B．had kicked |
| C．have kicked |
| D．were kicking |
Our knowledge of computers __________ growing all the time.
| A．be |
| B．is |
| C．are |
| D．were |
The teacher told us yesterday that December 25th __________ Christmas
Day.
| A．is |
| B．was |
| C．has been |
| D．will be |