It is reported that between the year 1550 and 1950 about one kind of living things___each year .
—There is still a copy of the book in the library. Will you go and borrow? —No, I’d rather buy in the bookstore.
Health problems are closely connected with bad eating habits and a _____ of exercise.
I looked under _____bed and found ______book I lost last week.
— It is unwise for some people to drive and talk on a cell phone. —_______. It’s very dangerous.
A new survey released by Yale University finds that Americans trust scientists most when ______ comes to information on climate change.