I'll go to the library as soon as I finish what I .
| A．was doing | B．am doing | C．have done | D．had been doing |
Jack, you’ve done your homework, ________ you?
| A．haven’t | B．don’t | C．won’t | D．do |
When I got up that morning, I found ________ elephant standing by the window.
| A．a | B．an | C．the | D．不填 |
The sight, hearing and other senses of wild animals are much better than of a human.
A that B those C which D what
About 5,000 men and women competed for medals in ________ 21st Winter Olympic Games.
A a B the C an D /
— I’ve been told that the sports meeting might be ______.
— Yes, it all depends on the weather.
A put away B put out C put aside D put off