---What is that? Is it an English learning machine?---Yes. It ________ us to improve our English.A. is used for helping B. used to help C. used to helping
---How nice the building is! ---It _____a hotel. But I am not sure.
He bought a lot of fruit,_______apples and oranges.
–How often do you go to concert? --______ever. I am not interested in that at all.
I found Li Ming ________in the river on my way home.
Most British high school children ______uniforms at school.