—_____ is your cat? —I think it’s one year old.
| A．How many | B．How much |
| C．How old | D．What color |
_____ great scientist Qian Xuesen is!
| A．How | B．How a | C．What | D．What a |
The moonlight goes _____ the window and makes the room bright.
| A．across | B．through | C．over | D．in |
Teenagers should learn to protect ______ from all kinds of danger.
| A．them | B．they | C．their | D．themselves |
With the help of the Internet, information can ______ every comer of the world quickly.
| A．go | B．land | C．reach | D．arrive |
It can’t be Lucy’s bike. Look! ______ is under the tree.
| A．She | B．Her | C．Hers | D．She’s |