Excuse me! You can’t smoke here. Look at the sign. It says “NO SMOKING”.—Sorry， I _______ it.

If you want to learn Chinese, you may learn from her. She speaks very ____ Chinese.

All languages change and develop when cultures _______ and communicate with each other.

You don’t know ______ I want to see you again. It’s ayear since I last saw you.

More and more high-rise buildings have to be built in Xinjiekou in Nanjing _____ space[ ]