At present obtaining more land is only possible as _____ result of urbanization, when more farmers leave _____ rural areas to work in the city.
| A．a ; the | B．the ; / | C．a ; / | D．the ; the |
___ 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 |
He came here without friends or ______and made his fortune.
| A．possessions | B．possession | C．wealth | D．good |