Always read the on the bottle carefully and take the right amount of medicine.
268. The limited supply of water has been put into practice, take care to turn off the running ____ before you leave.
267. When he was very young, he made up his mind to be a doctor. Which of the following words can not be used instead of the underlined word?
266. Mr. Green's are at table now. The underlined part means ____.
265. Which of the following does not belong to the same category?
264. The invention of the coal-burning_______engine revolutionized industrial production in the 18th century and opened the way to the development of mechanized transport by rail and sea.