—What do you think of teacher,Bob?—I find it fun and challenging.It is a job ________ you are doing something serious but interesting.
The student ____ can speak good English is my best friend.
The kids were very happy as they could get tickets .
-- Do you mind my opening the window? It's a bit hot in here. ---___________, actually.
_______, we had to feel the way out.
The cancer risks _______ with smoking have been well proved.