If you ________ home without a word, your parents wouldn't be so worried now.
| A．didn't leave | B．couldn't have left |
| C．hadn't left | D．shouldn't leave |
—I am dead tired.I can’t walk farther，Tom.
—________，John.You can do it.
| A．So what | B．Congratulations |
| C．Cheer up | D．Go ahead |
People hope that measures will be taken to________house prices rising.
| A．keep | B．prevent |
| C．protect | D．support |
Has some bad thing happened to her？It’s________her to drink so much.
| A．like | B．dislike |
| C．unlike | D．alike |
I admire Stephen Hawking greatly，whose________about black holes has a great effect on astronomy.
| A．theory | B．practice |
| C．way | D．method |
The new traffic rules that took effect on January 1 are much stricter than________in the past.
| A．that | B．this |
| C．it | D．those |