The child tiptoed quietly to the bird, _____ into the forest when he was about to catch it.
All the scientific evidence ______ that increasing use of carbon dioxide ______ the rise of the earth’s temperature.
Without the ‘ greenhouse effect’, the earth ____ be about thirty-three degrees Celsius cooler than it is.
During the Middle Ages, a conventional artist was not interested in showing nature and people _____they really were. A. who B what C. like D. as
________volcanoes now for many years, I am still as enthusiastic about my job as the first day I first______.
Film has a much shorter history, especially when ______ such art form as music and painting.