't run in the classroom,()you may hurt yourself.

hard,()you will succeed. 

snake hit him ()he went to see a doctor at once. 

make our dreams come true, we are supposed to set goals （）then try our best to achieve them. 

of us enjoy playing computer games,（）we can't spend too much time on it.

father was reading newspaper ()I was doing my homework.  

't run in the classroom,()you may hurt yourself.

hard,()you will succeed. 

snake hit him ()he went to see a doctor at once. 

make our dreams come true, we are supposed to set goals （）then try our best to achieve them. 

of us enjoy playing computer games,（）we can't spend too much time on it.

father was reading newspaper ()I was doing my homework.  

't run in the classroom,()you may hurt yourself.

hard,()you will succeed. 

snake hit him ()he went to see a doctor at once.