There used to be a bus stop at the corner of the street, ___?
| A．usedn’t there | B．usedn’t it | C．wasn’t there | D．wasn’t it |
I ________it as a basic principle of the company that suppliers of raw materials should be given a fair price for their products.
| A．make |
| B．look |
| C．take |
| D．think |
We were just about to call him ________his mother came back.
| A．while |
| B．as |
| C．when |
| D．because |
The spokesman never gave a________answer to any question of the reporters.They often talked some unconcerning things.
| A．straight |
| B．close |
| C．clear |
| D．direct |
________ theory，everyone must obey the rules，but ________practice，there are a few people who don’t obey the rules.
| A．In；on |
| B．On；in |
| C．In；in |
| D．On；on |
Mr.Barrette doesn’t think that all bad language should be allowed.In his opinion，there are ______ that should be kept up.
| A．degrees |
| B．levels |
| C．limits |
| D．standards |