In China, red represents power ______ it isalso the color of strong feelings.

－Have you written anything on Chinese traditional food so far －_ __, but I have a plan for it.

With all his attention ________ on his experiment, he has no time to spend with his family.[ ]

I want to be a pilot when I______.

My pen friend, Susan, wrote to me, _____ the idea that she would come to Changchun next week.[ ]