If there are ______ trees, the air in our city will be _______ cleaner.
| A．less, more | B．more, more |
| C．more, much | D．much, more |
The students were excited when they knew they ______ out for a spring out the next month.
| A．went | B．had gone | C．will go | D．would go |
Tommy’s parents looked _______ when they saw his excellent exam results.
| A．happy | B．happier | C．happiness | D．unhappy |
In my opinion, Li Jianrou is one of ___________ skaters this year.
| A．luckiest | B．lucky | C．the luckiest | D．luckier |
________ Jeremy was hurt in the match, he didn’t give up and finished in ninth place.
| A．When | B．Although | C．Because | D．If |
__________ surprised he was to see his stolen bicycle again at the gate of the park.
| A．How | B．What | C．What a | D．What an |