While listening carefully, the students＿＿＿ what their teacher said.
| A．set down | B．turned down |
| C．got down | D．calmed down |
Unitl tens of years ago, most zoos in such a way—animals in one area and birds in another.
| A．were organized | B．had organized |
| C．will organize | D．have been organized |
.This summer she took a training course, which was to help people develop their reading skills.
| A．operated | B．devoted | C．designed | D．furnished |
the large amount of time devoted to playing the piano, she doesn’t play well enough.
| A．Because | B．Since | C．Despite | D．With |
.Our chemistry teacher announced that he would do the experiment in a different way
we might find interesting.
| A．which | B．in which | C．in that | D．whom |
While she is a lovely girl, she be extremely difficult to work with.
| A．may | B．must | C．should | D．can |