______ time goes by, China is getting stronger and stronger.
| A．Until | B．While | C．As | D．When |
单词辨音。（从A、B、C、D四个选项中选出划线部分发音不一致的单词，共5小题，每小题1分，计5分。）
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When you want to go into the room，you should________ the door．
| A．knock on | B．knocking on |
| C．knocks on | D．to knock on |
There are some boys _______ computer games there.21世纪教育网版权所有
| A．are playing | B．play | C．playing | D．to play |
100 yuan ______enough for me.
| A．are | B．be | C．is | D．has |
The price of the computer is not _____ but cars are very _________.
| A．high; expensive | B．expensive; high |
| C．high;high | D．expensive;expensive |