He had to pause from time to time to wipe the sweat from his forehead，because the airconditioning system ______.
| A．broke in |
| B．broke up |
| C．broke out |
| D．broke down |
I don’t think the two parties can agreement in the near future.
| A．arrive | B．reach | C．reach for | D．arrive at |
． Knowledge of English is a must in international trade.
| A．the | B．/ | C．A | D．An |
Cloning the sheep ----Dolly is a big in science.
| A．progress | B．run | C．jump | D．rush |
----Who did you spend last weekend with?
---- .
| A．Palmer’s | B．The Palmers’ | C．The palmers | D．The palmer’s |
Yesterday I was invited to the dinner at invited to the dinner at .
| A．Turners | B．the Turners | C．Turners’ | D．The Turners’ |