--Mr. Li, I found a watch on the playground. --You should try to find out _________A. whose is the watch B. who is the owner of the watchC. whom does the watch belong to
Two _______ students join us in the English Corner every Friday.
---Do you know girl over there? ---Yes. She is exchange student from America.
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--It’s so hot here. Do you mind ____________ the window? ---____________. I will do it right now.
My computer broke down, but I am not clear ___________________.