试题题干
Fill in the blanks with an item as required.
With a subordinator:
When you select reading materials for your students, make sure
all the articles and books are legally published.
参考答案
试题解析
本题考查从属连接词的选择。 make sure后面是宾语从句，且从句中不缺句子成分，所以填that即可。
句意：当你为你的学生选择阅读材料时，确保所有的文章和书籍都是合法出版的。