-- Is this your notebook? -- No, it isn’t. Ask Bill. He is looking for ___________.
—There is ______ milk in the fridge. Please buy some on your way home.—All right.
Mr. Wu always spends a lot of time explaining things to us. He is so _______.
—The charity walk begins _______ 9.00 a.m. Don’t be late. —No problem.
Peter enjoyed _______ at his birthday party last night.
Look at the national flags below. Which represents China?