题目内容
Every means ______ tried, but in vain.
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Where to find the teacher and where to do the experiment ______.
—Where is our head teacher —He's left a ______ saying that he has something important to do.
Jim was late for two classes this morning. He said that he forgot both of the ______.
The White family ______ very large. All the family ______ animal lovers.
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