We usually play sports _______three hours every day.

reading room, we found her____ at a desk, withher attention____ on a book.

We should ______ all the figures and see if we have enough for the project.

1David talked with a friendof ________ on the Internet for a long time yesterday.

How much does an iPhone 6 ________— More than 5,000 yuan. I don’t think it is a good idea to ________ so much on a phone.