Scientists from different countries are trying to_____ a good way to solve the energy problem.
| A．keep up with | B．come up with |
| C．catch up with | D．meet up with |
– When are you leaving for the concert?
--I’m not sure. I haven’t finished ____ the dishes.
| A．do | B．to do | C．doing | D．done |
-- Must I come here at eight o’clock?
-No, you ____. You may come a little later.
| A．mustn’t | B．needn’t | C．may not | D．can’t |
I have two brothers. ____ of them likes maths.
| A．None | B．Neither | C．All | D．Both |
--- ____ do you play basketball? --- Three times a week.
How long B. How soon C. How often D. How much
I love swimming in summer. Nothing could be_____ than that!
| A．much interesting | B．more interested |
| C．more interesting | D．much more interested |