班级： 姓名： ⅰ.单词拼写（注意词形和词性） 2’×25=50’ 1．on________(平均) we received 3 letters each day. 2．i've________(致力于) all my time to being a waiter right now. 3．do you know how much he________(挣得) a month? 4．she knew from past________(经验) that ann would not give up easily. 5．the teacher's words________(鼓励) me to work harder. 6．these are________(具有挑战性的) problems. 7．the government has promised an________(额外的) ￡1 billion for health care. 8．he________(交换) an apple for an orange. 9．she looked back on her career with great________(满意)．
