——______ do you go camping?——Once a month.A. How long B. How often. C. How many.
Edward, you have grown up. You should learn to make your own room ________.
These natural disasters have warned us that everyone should start to protect the_____ immediately.
There __________ still some milk in the fridge. It’s not necessary to go to the store today.
—__________ T-shirt do you like better, the red one or the blue one? —I prefer the red one.
Your English teacher has never lost his temper, ___________ he?