It is reported that in our country cities __________ heavy air pollution that is 30 percent above the national standard or higher should try to meet standards by 2030.
—— How long has the bookshop been in business? —— ______1987.
In Hangzhou Mr. Black was so struck____the beauty of nature that he stayed___another night.
He is running____the wind towards the station_____ Tom running ________the right.
I don’t think you can work out the maths problem____her help.
My uncle lives____116 Changhe Street. His room is ____the sixth floor.