16.Twelve people ________ the jury in a law court to listen to the facts about a crime and to decide whether the person accused is guilty. A. are made up of B. constitute C. consist of D. be made of 17.Although vitamins ________ health, you cannot skip the traditional health measures like exercising and having a low-fat diet. A. are harmful to B. is good for C. is useless to D are beneficial to 18.We should try our best to ________ the land into good fields. A. convert B. utilize C. attain D. observe 19.They _________ tremendous hardship on their journey to the South Pole. A. proceeded B. endured C. provoked D. inserted 20.The game will keep the children ____________ for most of the evening . A. occupied B. endured C. provoked D. proceeded