---       do you go bike riding with your father?   ---Once a week.

–Taobao is the largest shopping website in China, _________?–Yes, it is very popular now. 

You look tired. You’d better ______ up late.

Where _________ your brother usually _______ lunch?

—Meat isn’t really dangerous , is it?--Oh! ____! It’s not at all good for our health.