Please help me

1. He used to keep silent like a fish and smoke 40 a day. he used to smoke 40 what?
2. When he heard about his father's death, he broke down and cried like a child. 
3. I was obviously tired becauseI slept like a____last night. lamb
4. The two brothers are very different and, they hate each other like cats and dogs.  (you could also say they "fight like cats and dogs"
5. He spent his summers___like a dog on the family. Not sure what you are trying to say.  Are you trying to say that he was like one of the family?

Please help me

1. He used to keep silent like a fish and smoke 40 a day.> No meaning > As clean as he looks , he smokes 40 cigarettes a day.
2. When he heard about his father's death, he broke down and cried like a baby.
3. I was obviously tired because I did not sleep well last night  like a____last night.
4. The two brothers are as different as cats are from dogs.
5. He spent his summers___like a dog on the family. ???> This sentence has no meaning > Let me rephrase it so that it has some meaning, using the words that you have used > He spent his summer with them , but he was treated much like the dog the family has : a pet.

Please help me

1. He used to keep silent like a fish and smoke 40 a day.
2. When he heard about his father's death, he broke down and cried like a child.
3. I was obviously tired because I slept like a____last night.
4. The two brothers are very different and hate each other like a cat and a dog.
5. He spent his summers___like a dog on the family.