1.用正确形式填空A man ___(see )a boy standing beside a lake with a

1.用正确形式填空
A man ___(see )a boy standing beside a lake with a mirror.“excese me“he said“but could you___(tell)me what you___（do)?”“I am fishing”“With a mirror?Could you tell me how it ___(work)?”the man asked.
"OK but i want five dollars"
the man wanted ___(konw) the secret very much.so he handed the boy the money"NOW show me how it works"he said"well"the boy ____(begin)"you hold the mirror towards the water and a fish___(go)by.