---Must I go to the gym three times a week? ---No, you ______. Twice a week is OK.
John’s ability to learn from observations and experience_______ greatly to his success in public life.
--- Is there any possible way to help them get rid of such a bad habit? --- To tell the truth, it’s very hard. But we teachers _______on this problem.
--- Why were you absent yesterday? --- I caught a cold, _______I had been walking around in the rain.
A subway is an effective way to solve traffic problems in_________big city. It has evident advantages, such as_______speed and convenience.
It’s the ability to do the job _______ matters not where you come from or who you are.