Use your head! Nothing taught by others can have the same effect on you as ________learned by yourself．

Half of       surveyed in 16 countries say they go first to their closet friend to share their deepest wishes and darkest fears.

---What kind of people do you need for the position? --- __________ with a good command of English.

—Have you got ______ready for the dinner?—No,I still need to buy some pork and vegetables.

September 18th, 1931 is a special day, ________， I think, that will be remembered by the Chinese forever.