第一节 单词拼写（共10小题；每小题1分，满分10分）
根据首字母和所给的中文，用单词的适当形式填空
71. It was too _______(雾) for people to see each other in such bad weather .
72. A proper a______ to improving your learning efficiency(有效地) is of great importance to every student.
73. Early to bed and early to rise makes a man healthy, w_____ and wise.
74. Nowadays people tend to buy the product or service the advertisement _________(推销，促销) or suggests.
75. The supermarket often began some ________(活动) to attract more customers to buy its goods.
