—How did your father smoking?—The doctor told him to do so,and he took the advice.
The river, _______ the bank are covered with trees, is very long.
Which do you enjoy _____ your weekend, swimming or fishing?
The editor’s job is to keep the newspaper_______and_________to the readers.
I can’t find my watch. I must have______it in the hotel.
Is Mr. Wang good at drawing his students into___discussion?