状语从句练习题及答案详解 .docx
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状语从句练习题
1. I had been looking for the book for two days____ I found it at last.
a. until b. when c. before d. while
2. He punished his students ____ they did anything wrong.
a. however b. whenever c. whatever d. whichever
3. Those passengers will wait here____ the bus arrives.
a. until b. because c.
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