The joke told by Tom made us _____, so the teacher couldn’t make himself _____.
| A．to laugh; hearing | B．laughing; heard |
| C．laughing; hear | D．laughed; heard |
The plan __________just because people were unwilling to cooperate.
| A．broke down | B．pulled down | C．turned down | D．put |
The customer bargained with the shopkeeper for a long time, and finally they agreed ___________ the price.
| A．to | B．with | C．on | D．at |
Having received___________ training of the MS. Company, he was offered important position in management.
| A．the;an | B．不填;an | C．the;不填 | D．a;a |
He must have attended the meeting yesterday,___________ he?
| A．didn't | B．mustn't | C．needn't | D．hasn't |
I was really too busy with my homework and I couldn't help ____________
housework.
| A．doing | B．do | C．did | D．done |