I can't say which wine is stronger—it's a (n)_____ of personal taste.
| A．affair | B．event | C．matter | D．variety |
Please ask ________ not to skate on the thin ice.It’s very dangerous.
| A．they | B．them | C．their | D．theirs |
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 /