I'll give you a sentence that contains clues to two words that are spelled the same when the letters of one of the words is spelled backwards.
Ex: The little girl stopped playing with her spinning toy as the cooking vessel fell off the bench top. ANSWER: Top pot.
-1. The wild canine type beast fought bravely as the rise in river water swept him along. 4 letters each
-2. As the loud gunfire ceases the scared witness catches the eye of the thief as he runs down the lane. 5
-3. After the bride and groom married, they walked back to the grass which was covered in dampness from the night time air. 3
-4. At present, tennis players who have experienced victory earn a lot of money. 3
5. The mixture of shale, clay and coal dust produced at the coal mine made the young female workers feel sick. 4
-6. The very eager fan just couldn't contain herself during the performance of her favorite female opera singer. 4
-7. The teleost type fish swam lazily in the tank on Mr Marvin's film set. 3
-8. The one solitary sound from the puppy was all the little boy needed to hear before he gave the owner some money. 3
-9. The farmer picked the only sweet potato that had grown in the fifth month instead of the seventh. 3
-10. The orphaned children used to dwell in an old deserted shack until the nasty satanic owner chased them away. 4