Turn off the lights when you leave a room用动名词做主语表达don‘t use paper towels or napkins用形式主语表达
问题描述：
Turn off the lights when you leave a room用动名词做主语表达
don‘t use paper towels or napkins用形式主语表达
答
when leaving a room ,turning off the light should be done.
答
Turn off the lights when you leave a room用动名词做主语表达leaving a room,turn off the lights.don‘t use paper towels or napkins用形式主语表达It is not allowed to use paper towels or napkins用形式主语...