--____are you staying in Ottawa?
--About two weeks.
| A．How many | B．How long | C．How far | D．How soon |
—Have you________visited the old house by the river？
—No，________．
| A．ever；ever |
| B．ever；never |
| C．never；ever |
| D．never；never |
Nowadays________of business letters are written in English．
| A．two third |
| B．two thirds |
| C．two three |
| D．second three |
—Have you ever been to Shanghai？
—Yes．I________there a few months ago．
A．have been
B．went
C．have gone
—Would your younger brother go for a picnic this Sunday？
—If I don’t go，________．
| A．so does he |
| B．so will he |
| C．neither does he |
| D．neither will he |
It’s said that________of the water around the world________polluted．
| A．two third；has |
| B．two thirds；have |
| C．two third；are |
| D．two thirds；is |