新人教版英语必修三Unit3 Using Language课时作业含答案 Ⅰ.单词拼写 1．The people all ________ (鞠躬) down before the Emperor. 2．Conditions in the prison camp were ________(难以置信的)． 3．He went to the post office to buy writing paper and ________(信封)． 4．Why are you so ________ (粗鲁的) to your mother? 5．The ________ (方式) in which the decision was made was hard to accept. 6．Could you tell us what’s for ________ (甜点)? 7．He covered her mouth to stop her from ________ (尖叫)． 8．A large ________ (数量) of water has been wasted by the factory. 9．It’s well－known that his father is a very ________ (真诚的) person. 10．I was very sad ________ (真正地) to hear of your father’s death. 答案：1.bowed 2.unbelievable 3.envelopes 4.rude