—What do you often do ________ classes to relax?—Listen to music or walk around the school.A.overB.throughC.between
Tell me ______________.
If you want to buy an expensive camera, we have several models for you ________.
The cleaners should not be looked down on and they are angels of the city _________.
—Would you like to play tennis with me _________ it doesn’t rain tomorrow? —Sure, _________ I am busy.
Fire is dangerous and we must __________ children away _________ it.