一、单项选择
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
1. — How about taking __________ walk now?
— Sounds great.
A. a B. / C. an D. the
2. —When do you go to bed?
—Usually_______ nine o’clock.
A. on B. in C. at D. to
3. —What’s the time?
—__________ six o’clock.
A. Its B. It’s
C. This is D. They are
