After receiving the news , immediate _______ had been taken by the local government to stop the disease spreading .
It is required that the students _____ mobile phones in their school, so seldom _____them using one.
Nuclear ______ be really dangerous at times even though it’s a nice energy in general.
When reading English novels, I often idiomatic expressions that I can't understand.
Hardly _ when they realized that it was too late to catch the last train.
The Obama government has reformed on tax system.What people doubt is ______ it will do them any good.