The science of computer, _____rapid progress has been made in recent years, is the most important of all science.
The living room is clean and tidy, with a dining table already for a meal to be cooked.
—Where have you been?—I in the heavy traffic. Otherwise I here earlier.
But for the help of my English teacher, I the first prize in the English Writing Competition.
—What about the student in your class, Mr. Wang?—The doctor said that sleep caused him poor memory and poor concentration.
To avoid on how to use the word, you’d better refer to a dictionary.