Ⅰ.单句语法填空
1．The little boy who got lost decided to remain ________ he was and waited for his dad.
答案与解析 where 句意：这个迷路的小男孩决定待在他原来的地方，等他父亲。where引导的从句作remain的表语。
2．China is playing an important role in the world. That's ________ Laura has come to study Chinese.
答案与解析 why That's why ... “那就是……的原因”，强调原因。why引导表语从句。
