His quarrel with his boss ______ him his job.
| A．speed | B．cost | C．spent | D．saved |
He had a lot of friends, only a few of ______ invited to his wedding.
| A．whom | B．them | C．which | D．who |
.Slang words (俚语) are made _____ special groups,such as workers and musicians.
| A．of | B．into | C．from | D．by |
. —Have you finished your composition?
—Yes, I _____it in twenty minutes.
| A．have finished | B．finished | C．will have finished | D．had finished |
It’s important that he_____ English well.
| A．learn | B．learns | C．learnt | D．learning |
I’m sorry that I can’t help _____ trees because I am busy with the homework.
| A．to plant | B．planting | C．planted | D．plants |