You had better__________because you have to drive back home.
| A．not drinking | B．not drink | C．don’t drink | D．not to drink |
I think maths is ________ than Chinese.
| A．more difficult | B．difficult |
| C．hard | D．easy |
There are lots of trees on ______ sides of the street.
| A．all | B．both | C．each | D．every |
My storybook is ______ in the bookshop.
| A．the most interesting | B．more interesting |
| C．the more interested | D．most interested |
She sings very well, because she has a good ________ .
| A．voice | B．noise | C．sound | D．face |
Li Lei is one of ________ in our class.
| A．best students | B．a good student |
| C．good students | D．the best students |