We should think more of others if we want to ______ them.

Have you found the information is about President Xi’s visit to Russia— Not yet. I will surf the Internet.

Where did you meet your middle school teacher— It was in the supermarket ______ I was doing someshopping with my son.

This is one of the oldest trees in theworld_____ such a big tree

The flu is believed____ by viruses that liketo reproduce in the cells inside the human nose and throat.