As PM2.5 readings reached as high as 900 in some cities, people are more _____ to get lung cancer in such conditions.

How dangerous it was!- – Yes, but for the passer – by’ s quick action, the child _____．

Not a word ____ at yesterday’s meeting. [ ]

We work together to achieve our common purpose： ________ world that is safer, cleaner and healthier than ________ one we are living in.

______ do you think ____ the environment (环境) in Yichun—It’s pretty good.