The river has become much ______ than before because of the waste water.A. dirty B. dirtier C. Dirtiest
The students are passing the ball from one to ______ .
Thank you for _______ let me _______ shopping today.
What a great time they have ________ with each other during lunchtime!
Would you ______ this picture ______the wall?
Here comes the train.Let’s _________ .