Fill in the gaps using suitable words :-

 We all know what a dream is. Generally we dream during our sleep. Some dreams are sweet or (a)--When we dream something extremely bad, we call it a (b)--.Dreams have no (c)-- They are soft and (d)--The dream we have during the day time is called (e)--.Dreams have fascinated philosophers for thousand of years, but none could (f)--specifically what dream actually is. Dreams can be extraordinarily (g)--or very vague. While many theories have been proposed no consensus has emerged. It is important to consider that science is still (h)--the exact purpose and function of sleep itself. Some researchers suggest that dreams have no (i)--purpose.while others believe that (j)--is essential to mental, emotional and physical well-being.