We will go for a picnic if it ______ tomorrow.
| A．doesn’t rain | B．wasn’t rainy | C．won’t rain | D．wasn’t rainng |
If there are ____trees, the air in our city will be ____cleaner.
| A．fewer, much | B．more, more | C．more, much | D．much, more |
Before the police , the alien left the shop .
| A．got | B．reached | C．arrived | D．arrived at |
We didn’t know the good news ______ he told us.
| A．after | B．or | C．because | D．until |
There _________ a computer in everyone's house in the future.
| A．will have | B．will has | C．will be | D．is |
My sister can’t cook, I can’t, ________ .
| A．too | B．also | C．either | D．neither |