—Have your read the article A Dirty Beijing, which is about air pollution?—Yes. It’s highly informative. I _____no idea that the PM2.5 there sometimes reached 300.
She will fly to Washington, ________ she can enjoy herself.
Don’t rush! The woman carrying the baby, come in first, ______ ?
The general manager often looks through the sales _____ his men have kept records in different branch companies.
While traveling, whether on business or for _____ , you often need to stay in a hotel.
In the park , the number of the visitors is tightly ____ to avoid damaging the environment or putting stress on the animals.