The radio is too loud. Will you please _______ ?
| A．turn it down | B．turn it on | C．turn off it | D．turn it up |
Mrs. Wang always asks us to ________ conversations in the English classes.
| A．make up | B．turn up | C．end up | D．look up |
Would you please drive more ________, David? The train is leaving soon.
| A．slowly | B．carefully | C．easily | D．quickly |
After a serious illness, he finally _______ how important his health is.
| A．meant | B．realized | C．added | D．impressed |
It is our ________ to look after our parents when they get old.
| A．duty | B．habit | C．problem | D．decision |
Our teacher is very kind to us. So we regard her ________our best friend.
| A．on | B．to | C．as | D．at |