His parents made a suggestion that hean hour for exercise every day.

If there hadn’t been so much smog in Beijing, we______________ the beautiful scenery across the Tiananmen Square.

Is it interesting to play computer games—Yes, _____ you are interested in playing computer games, you’ll have trouble giving it up.

Who is the girl standing over there? —Well, if you________ know, her name is Mabel.[ ]

Hout in our school. ——OK, I tothat.