—Will you give me a hand? I have some trouble_______ the scientific problem.
—Don't worry. I'll try my best to help you _______.
| A．solving; in five minutes |
| B．to solve; in five-minute |
| C．to solve; after five minutes |
| D．solving; after five-minutes |
You must be living in your dream if you think he’ll _______ his mind.
| A．pollute | B．avoid | C．imagine | D．change |
The car is quite small, _______ if you have children.
| A．immediately | B．luckily | C．especially | D．finally |
Playing basketball is sometimes very tiring, ______ I enjoy it very much.
| A．so | B．but | C．if | D．or |
There are many _____ people in the world, they can’t see anything, but they never give up their dreams.
| A．poor | B．young | C．blind | D．old |
--- Excuse me, is this ______ ipad?
--- No, it’s not mine. It’s my friend’s.
| A．your | B．my | C．his | D．her |