--- What do you think of teaching, Bob? --- I find it and challenging. It is a job you are doing something serious but interesting.
Mr Wang was much disappointed to see the washing machine he had had____ went wrong again.
Please tell me the way thought of____ the garden.
____ I had done it I knew I had made a mistake.
I have a lot of books, half of____ novels.
You can, ____, come to join us in the singing programme.