Why do you work so hard?—________my parents’ expectations

The problem of global warming is serious. _____ , the sea levels have _____a little.[ ]

the people in China, poor or rich,young or old, man or woman, are on the same level _____ each other

_______ to the left , and you will find thepost office．

__ have worried before I came to the new school, for my classmates here are very friendly to me.