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用动词不定式或
I learnt ________(swim)when I was three years old．
I'm too fat, so I have decided ________(do)more exercise．
He was very angry and refused ________(say)anything．
Damin showed us how he made the cormorants catch fishes.
Damin showed us how ________ ________ the cormorants catch fishes.
Where is Lily? I need ________(talk)with her．