Mary used to________ to work, but now she gets used to__________ to work.

It’s estimated that nearly 70% prisoners __________ from the prison located in that coastal city

I had been puzzled over the problem for over an hour without any result, ____ all at once the solution flashed across my mind

Many students signed up for the _____ race in the sports meeting to be held next week.w

To my mind, the secret to happiness__________ your successful work and your contribution towards others’ happiness.