Gun control is a subject_____ Americans have argued for a long time.
| A．of which | B．with which | C．about which | D．into which |
.________all his courage, he invites Celine to get off the train with him．
| A．To gather | B．Gathered | C．Gathering | D．Being gathered |
. _______of the household rubbish_______recycled or reused since the new technology was applied.
| A．Three-fourth; has | B．Three-fourth; have been |
| C．Three-fourths; has been | D．Three-fourths; have |
Young people go to college with the expectation that ____________ educated people get a higher pay.
| A．good | B．better | C．best | D．the best |
Write down the key words that you __________ your students to find in the passage.
| A．make | B．hope | C．suggest | D．expect |
I think you should complain __________,of course, you are happy with the way things are.
| A．if | B．unless | C．as | D．because |