They were trying to remove harmful ___________ from cigarettes.
_________ we have realized the danger of over-consumption, some measures should be adopted as soon as possible.
Since then the number of people taking driving lessons______20%.
-----Are you still very busy? -----Yes, I ______ the report for the manager and it won’t take long.
______ in the earthquake _______ taken to the hospitals in other cities.
-----Where is your new home now? -----In the new developed zone. But I ______ downtown for five years.