Can I say,<br/><br/>(a) It is a little of water in the pail.<br/><br/> A little of water is in the pail.<br/><br/>(b) They are in the temple to celebrate Happy Wesak Day.<br/><br/> They have a Happy Wesak Day in the temple in the evening. <br/><br/>(c) She must wash / needs to wash the plates carefully.