单项选择题
（） Pacific Ocean is （） very large sea to the west of North and South America, and to the east of Asia and Australia.
A. The; a B. A; the C. The; the D. A; a
单项选择题 "You are too self-centered. It’s high time you （） that you are not the most important person in the world," Edgar said to his boss angrily.
单项选择题 We don’t need air conditioning, （）.
单项选择题 If I had remembered （）the window，the thief would not have got in.
