-Is your father a teacher of English in the No.l Middle School?
-No! But he _________ English there for ten years.
| A．has taught | B．has been teaching |
| C．taught | D．had taught |
Do not let any failures discourage you, for you can never tell ________ close you may be to victory.
| A．how |
| B．that |
| C．which |
| D．where |
makes the book so extraordinary is the creative imagination of the writer.
| A．That |
| B．What |
| C．Who |
| D．Which |
The chair looks rather hard, but in fact, it is very comfortable to
.
| A．sit |
| B．sit on |
| C．be sat |
| D．be sat on |
American Indians about five percent of the US population
| A．fill up |
| B．bring up |
| C．make up |
| D．set up |
We cannot figure outquite a number of insects, birds and animals are dying out.
| A．that |
| B．as |
| C．why |
| D．when |