21．This book is said to be a special one, which____many events not found on other history books.
| A．writes | B．covers | C．instructs | D．conveys |
－Is there any possibilityyou could pick me up at the airport?
－No problem.
| A． | When | B． | that | C． | whether | D． | what |
Animals suffered at the hands of Man ___ they were destroyed by people to make way for agricultural had to provide food for more people.
| A．in which | B．for which |
| C．so that | D．in that |
We finished the run in less than half the time ____.
| A．allowing | B．to allow |
| C．allowed | D．allows |
---Shall we go out for a walk?
--- Sorry. This is not the right ____ to invite me. I am too tired to walk.
| A．moment | B．situation |
| C．place | D．chance |
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 |