He is said ______ several books since 1996.
He used to make a living_________playing music on festivals. Now he makes shoes__________ his own hands.
We can’t continue to pretend that the problem of pollution doesn’t___________in this city.
We must do whatever we can to ______the river from being polluted any more.
We should try our best to___________ those people after the disaster.
— I’d like to take a week holiday. — ________, we are too busy.