He must be helping the old man to water the flowers, ______?
She is a kindhearted woman and often has________mercy________people who are in trouble.
Little Johnny felt the bag,curious to know what it____________.
David threatened ________his neighbor to the police if the damages were not paid .
The government insists that the dam will not do any ________to the environment .
I would ________it if you would let me deal with this by myself .