As civilization __________，more and more people have realized the importance of preserving rare animals from dying out.
| A．stretches |
| B．spreads |
| C．extends |
| D．expands |
—What are you going to do this weekend?
—________. If time permits, I may go to Shanghai to visit my friends.
| A．Don’t mention it | B．It doesn’t matter | C．Forget it | D．It depends. |
— I’m sorry I didn’t make it to your party last night.
—______, I know you’re busy these days.
| A．Of course | B．No kidding | C．That’s all right | D．You are welcome |
After he retired from the office, Tom ______ painting for a while, but soon lost interest.
| A．took up | B．saved up | C．kept up | D．drew up |
When the old man ______ to walk back to his house, the sun ______ itself behind the mountain.
| A．started; had already hidden | B．was starting; hid |
| C．had started; had already hidden | D．had started; was hiding |
The majority of visitors ______ in favor of his conclusion that the number of books published on the subject ______ simply surprising.
| A．were; was | B．was; was | C．were; were | D．was; were |