I THINK WE SHOULD ______ OFF THE FAUCETS WHEN WE DON’T USE. A....

Question

11. I think we should ______ off the faucets when we don’t use.    A. turning      B. to turn      C. turn       D. turned

Answer

11. I think we should ______ off the faucets when we don’t use.    A. turning      B. to turn      C. turn       D. turned