必修三unit1-unit3质量检测题I.完形填空(共20小题,每题1.5分,满分30分)Once a farmer employed two servants who worked on the farm. One day, the farmer commanded them to 21 seeds(种子)while he was away.The first servant worked 22 in the fields every day. Though he felt so tired sometimes, he never gave up. He just took a 23 and thought of his master coming back. There were also times 24 he got hurt by stones, insects and other objects, but he still continued obeying(服从)his masters 25 . He knew that someda