Mike _______ his computer and checked his e-mail.
| A．turned on | B．turned off |
| C．turned up | D．turned down |
We should plant more trees on ____ sides of the street.
| A．either | B．both | C．all | D．each |
---What are you going to do next weekend?
---I _____ yet. Do you have any good ideas?
| A．haven't decided | B．won't decide |
| C．have decided | D．didn't decide |
About 75% percent of the students can go swimming ____the rest can't.
| A．while | B．and | C．so | D．or |
I don't like the big computer. It __too much money and __up a lot of space
| A．takes...not | B．costs...costs |
| C．takes...takes | D．costs...takes |
You'd better ride a bike to go to school _____ taking a bus every day.
| A．instead of | B．instead | C．thanks to | D．because of |