Whether ways will be found to stop pollution or not is just _______ worries the public.
Soon , Mary _____ the shock and became calm again.
The children were surprised by the sudden _____ of their teacher.
—Do you think we can get there on time? —Yes,_________ the bus does not break down.
_________,they’ll carry on the work until they can get the money they need.
Every minute should be _________ lessons.