Hard Sentence!

Check the spellings of words.

1.  Studying wont be bad!                                       
2. Singers have beautiful voices!

Check the grammar.

1. Yesterday the doctor will tell me if I have high fever or not. 
2. I knew you have something hidden on your back now . . . . .       

 Check the puntuations. 

1. Did you have to bring in the laundry while they are still wet!
2. Oh dear! Now I'll never get the job done! You will help, would you.