We can never expect _______bluer sky unless we create ______ less polluted world.
| A．a；a | B．a；the | C．the；a | D．the；the |
If there were no examinations, we should have ______ at school.
| A．the happiest time | B．a more happier time |
| C．much happiest time | D．a much happier time |
— If you don’t like the red coat, take the blue one.
— OK, but do you have ______ size in blue? This one’s a bit tight for me.
| A．a big | B．a bigger |
| C．the big | D．the bigger |
With the development of the Internet, _______ communication is done by regular mail.
| A．less | B．more |
| C．little | D．few |
When they arrived at the school it was raining _______ harder.
| A．more | B．quite |
| C．very | D．even |
I know this is not quite the right word, but I can’t be bothered to think of _____.
| A．a better | B．a best |
| C．the better | D．the good |