(2013·安徽,21)From space, the earth looks blue. This is ________ about seventyone percent of its surface is covered by water.
| A.why | B.how |
| C.because | D.whether |
The village I grew up ____ has changed a lot.
| A.in it | B.in | C.in that | D.in which |
We went to Canada to travel and my cousin ___ as our guide.
| A.played | B.showed | C.acted | D.performed |
Gun control is a subject ___ Americans have argued for a long time.
| A.of which | B.with which | C.about which | D.into which |
——How about your new school?
——I couldn’t feel _____ about it. All my teachers are very kind and helpful.
| A.better | B.worse | C.best | D.worst |
He is the only one of the people here who ____ how to operate the computer.
| A.knows | B.know | C.had known | D.known |