Question

【题目】— Please don't leave the tap ________ when you brush your teeth.
— Sorry. It's wrong for me ________ water.
A.off; to waste
B.on; to waste
C.on; wasting

Answer 1

【答案】B
【解析】正确理解题干，句意：—当你刷牙的时候，不要让水龙头开着。—对不起。对于我来说浪费水是错误的。此题考查固定短语leave on让保持开着的状态排除A，句型形式主语和真正主语，句型it is +形容词+for sb to do sth对于某人来说做某事怎么样。根据句意，最佳答案选B。