This bedroom is ___________.
---Would you like to come? ---Thank you. ____, but I’m busy.
___ do you like China?
I can ___ English, but not ____.
There ___ some fish in the river.
–Can I borrow your ruler? ---Sorry, I left ___ at home. But you can buy ____ in the shop. A. it; one B. it; it C, one; it D. one; one