No free plastic bag in the supermarket helps to _____ white pollution.

Zhang Lili, _________ good teacher, is regarded as _________ most beautiful teacher at present.

There will be a discussion tomorrow,all those who want to,please raise your hands.

I always go to sleep _____ the light on.[ ]

Renshou_________ a lot in the last 3 years. It’s now one of the most important cities in Meishan.