It’s believed that our moods are sometimes by colours. Many scientists are doing some research (研究) on this subject.
| A．influenced | B．chosen | C． required | D．explained |
If there are _______ people driving, there will be ______ air pollution.
| A．more; less | B．less; fewer | C．fewer; more | D．fewer; less |
There ________ no good news for you today.
| A．be | B．is | C．are | D．am |
Be careful of the dog! It’s. Keep away from it.
| A．gentle | B．aggressive | C．lovely | D．interesting |
There are always ____interesting stories in the series that ___ many people watch them.
| A．so, so | B．such, such | C．such, so | D．so, such |
----______ does ______ take to play tennis? ----Let me see. About two hours.
| A．How; it | B．How long; it | C．How; he | D．How long; he |