It’s a good way to learn about science there because you can ________ ideas.
| A．put up | B．try out | C．turn on | D．fill with |
They tried several times to the problem, and in the end they succeeded.
| A．give up | B．work out | C．look through | D．think of |
The cartoon, Snoopy, is very popular in China.
| A．writer | B．actor | C．character | D．designer |
__ we are young, we can still do something to help protect the environment.
| A．If | B．Since | C．Because | D．Though |
In America when you’re given a present, you can open it . You don’t have to wait.
| A．immediately | B．properly | C．carefully | D．quietly |
There are plenty of books in our library. You can four at a time.
| A．own | B．borrow | C．lend | D．carry |