The old couple often take a walk after supper in the park with their pet dog ___.
Mother told Jim to watch the milk until it boiled and then _________ off the gas.
The idea puzzled me so much that I stopped for a few seconds to try to _______.
One of the walls of the reading--room should be painted yellow, and ______. A. the other is white B. the others white C. the other white D, another is white
-- You know who came to our school yesterday? -- Professor Smith? We once met at a conference. -- ______. He came and gave a wonderful speech.
-- Do you enjoy ______ here? -- Oh, yes, the air, the green hill, the thickly trees. Everything is so attractive.