Smile to the world, ________ the world will smile back to you.
| A．nor | B．but | C．or | D．and |
You should guard_______ theft on the bus.
| A．for | B．on | C．in | D．against |
Tiger Watch, _______ 80-minute documentary, won_______ award for its amazing photography.
| A．an; an | B．an, a | C．a, an | D．the; a |
Your future depends on．
| A．what do you do | B．that you were lucky |
| C．whether you work hard | D．how much did you get |
The spirit of pulling together can always make our team____at last.
| A．winning | B．won | C．to win | D．win |
-What did you do in today's history class?
-We talked about the characters____ achieved fame in American history.
| A．who | B．which | C．／ | D．what |