The air in Lanzhou is getting much _____ now than a few years ago .
| A．clean | B．cleaner | C．cleanest | D．the cleanest |
Look ! _________ students are doing morning exercises on the playground .
| A．hundreds of | B．hundred of | C．hundred | D．hundreds |
Mike is good at playing basketball ______Bruce does well in football .
| A．when | B．until | C．since | D．while |
________ the wind sounds now !The work we are doing ________ finished on time .
| A．How terribly , can’t be | B．How terrible , mustn’t be |
| C．How terribly , may be | D．How terrible ,can’t be |
Daniel plays chess _______ , if not better than , David .
| A．as well | B．as well as | C．so well | D．so well as |
My teacher probably spoke about this rule ,but I forgot about it or didn’t ______________.
| A．pay attention | B．pay attention to | C．paid attention to | D．pay no attention |