We must wear special boots to prevent us___-in the air.
We must wear special boots to prevent us___-in the air.
we must take some measures to prevent the environment being
we must pay special attention to the idioms of _____english
we should try our best to prevent the air pollution _____(li
改写同义句:To prevent this,humans on Mars have to wear special bo
The boots __________(not be)comfortable to wear
We must try our best to prevent the lake from pollution.
at present there must be nothing we can do to prevent the ju
选择:Every possible means ( ) to prevent the air pollution
Little___done to prevent the air from being polluted.
We must do everything possible to prevent such things from__
英语翻译原文:we must keep the air clean for the eagle to fly.we mu