题目内容
17．We must pay attention to English grammar when we learn English．分析 在学习英语的时候，我们必须要注意英语语法．
解答 答案：attention．
根据空格前面是pay a，空格后面是介词to，因此我们知道这个题目是考查固定短语"pay a attention to"意思是"注意…"所以这句话的意思是"在学习英语的时候，我们必须要注意英语语法．"综上所述，故填attention．
点评 首先要掌握句子的意思，然后结合具体的题目以及给出的首字母提示，就可以确定正确答案．
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