_________.Is this your pen?
The world’s population is getting larger and larger, so scientists will have to ______ new ways to solve food problem.
---Do you know ___________ about China? --- The people and the food.
Lin Tao is good at all the subjects at school, ___________ English.
I agree with most of what you said. But I don’t agree with___________.
---Which would you like, tea or coffee? ---___________ is OK. I really don’t mind.