1.Although he d__ his mistake,it was too late.
句意是：尽管他____他的错误.但是一切来不及了.
应该是过去时.发现.discovered
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2.- What kind of f__ do you like?
- Comedies.
句意是：你喜欢什么种类的_______.回答是喜剧.所以填电影 films
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3.How d__ it is in the room!I can't see anything.
句意是：这房间真______啊.我什么也看不见.
所以写 黑暗.
dark