of his time been spent on studies every day.

May I take this book out of the reading room?—No, you______. You read it in here.

More and more people prefer jogging in the morning, _______ benefits for health arise from the air rich in oxygen.

Jean could be a very pretty girl, but she__________no attention to her clothes

We are _____ to see so many interesting books in the library. Now we have _____ to read.