It would be a good idea to use a plastic bottle，__________ cut off, as a container to grow young plants in.
| A．which |
| B．whose top |
| C．the top of that |
| D．with its top |
—Mr. Gates, we want to hear your opinion about the matter.
—Ok. I to that .
| A．come | B．came | C．am coming | D．have come |
I can’t quite remember ______you started doing the work
| A．that it was when | B．that when it was |
| C．when was it that | D．when it was that |
The water of the lake was so __________ that it looked like glass.
| A．silent | B．calm | C．still | D．quiet |
These articles are written in simple language, _____ makes it easy to read.
| A．which | B．this | C．that | D．it |
of the land in my hometowncovered with trees and grass.
| A．Two fifth ; is | B．Two fifth ; are | C．Two fifths ; is | D．Two fifths ; are |