At least 300 million people are using QQ _____by Ma Huateng to chat on line.
When you travel to a city, you’d better buy a ________to get more information about it.
—I’m going to take the driving test tomorrow. —________.
—Have you bought an MP3? —________. I’m listening to an English song on it.
—Have you finished your homework________? —Yes, I’ve done it ________.
Steve is looking ________ a Chinese friend by chatting ________ some Chinese children on the Internet.