The teacher _____ the students how to improve their writing skill since last term.
| A．has told | B．is telling |
| C．has been telling | D．will have told |
Stand there! I'll __ you.
| A．take down | B．take photos of | C．take off | D．take notes |
___ the help of his teacher, he has passed the English exam.
| A．Under | B．In | C．Below | D．With |
The children ___ not to play football in the street.
| A．warn | B．warned | C．must warn | D．are warned |
I bought a dress for you only 10 dollars in a sale; it was a real _____.
| A．exchange | B．bargain | C．trade | D．business |
The Olympic _____ remind us of where the Olympics are held and the characteristics of the host country.
| A．symbols | B．signals | C．marks | D．signs |