Can you drive a car? — No, I ________. I’m not old enough to get a license.

At the meeting place of the Yangtze River and Jialing RIiver ,one of the largest cities in china.

He haswork to do, so he can’t go with you.

I have a friend _______ is training for the Olympics．　

Some of you may have finished unit one. _______, you can go on to unit two.