2017-2018学年人教版必修二Unit5 Section 1巩固提升含解析 Ⅰ.单词拼写 1．I __rolled__(滚动)a ball across the carpet. 2．They __pretended__(假装) that they were tourists. 3． __Attach__(贴上)a stamp to the envelope and mail it. 4．The trees __form__(形成) a natural protection from the sun’s ray. 5．The most they __earn__ (挣得)in a day is ten dollars. 6．Language is an important __instrument__ (工具) for communication. 7．The student will __perform__ (表演) an opera next Friday. 8．The concert will be __broadcast__(广播) live by the BBC． 9．Her husband is a __humorous__(幽默的) man. 10．The white flowers are __attractive__(吸引人的) in the spring.