why didi Bolt run so fast?Most people wanted to know.(合并为一句)

who is the murderer?the police wanted to know.合并为一句 what was wrong?Doctors wanted to know.(合并为一句） Mike runs fast.I run faster 两句合并为一句 Ben runs fast.I run faster.合并一句 i'm so tired .i can't walk so fast 合并一为句 I couldn't understand the people.They talked fast.（合并为一句） I'm tired .I can't walk so fast(合并为一句） I went abroad.I wanted to make many new friends.合并为一句是什么 I looked inside.I wanted to see what they were doing合并为一句 Don't know why people become so fast .Friends do not cross t Why did you decide it so fast? why people like to think more have you eve r wanted to know why some people like very loud