单项选择题
Air, or （）is called the atmosphere, surrounds the whole world.
A. it B. which C. what D. that
单项选择题 A library with 5000 books ______ to the school as a gift.
单项选择题 — I don’t like chicken （）fish. —I don’t like chicken, （）I like fish very much.
单项选择题 She asked ______.
