1. English is used _____ the native language in Australia.
2. We are native speakers _____ English.
3. A knife is used _____ cutting things.
4. Millions _____ people are learning to speak English in China.
5. Chinese is one _____ the official languages in the United Nations.
6. Spring comes _____ winter.
7. Today some of the mobile phones can be used to take pictures _____ a camera.
8. Thank you _____ coming to see me.
9. First we have to fill _____ a form.
10. 50% of all business deals are made _____ English.

A. to
B. of
C. for

A．before
B．across
C．after
D．between

[     ]

A. Behind
B. Since
C. Among
D. At

A. without, or
B. with, and
C. without, and
D. with, or

A. like
B. as
C. then
D. enough

A. of
B. in
C. to
D. for

A．for; for
B．with; for
C．for; as
D．as; for

A. in
B. on
C. To
D. of

A. on
B. to
C. in
D. at