So serious ________ that even the best doctors failed to save his life.
| A．the man was injured | B．was the man injured |
| C．the man is injured | D．is the man injured |
—What do you mean by saying that?
—I think you _______ what I said. I meant no harm.
| A．understood | B．misunderstood |
| C．heard | D．followed |
Our school covers an area of 400 mu, which is _______ as yours.
| A．twice as big | B．twice bigger |
| C．twice the size | D．twice the big |
Do you know that _______ with wise men improves your mind?
| A．chat | B．chats | C．chatted | D．chatting |
Only ______ a human being.
| A．when is it hungry a lion will attack |
| B．when it is hungry a lion will attack |
| C．when it is hungry will a lion attack |
| D．when is it hungry will a lion attack |
You’ve done much of the work, and please leave ______ to us.
| A．the rest | B．the other | C．another | D．the others |