Smoking is a bad habit.You should it.
--I just wonder ______ that made Mo Yan so famous a writer. --Of course his early experiences in his hometown.
Peter _______ some money every month so that he can buy a new car.
Taking a trip abroad is certainly good for old couples, but it remains ____ whether they will enjoy it.
--Aren’t we living a happy life? --You should not be content with what you have. _______, you must be better in every aspect of your life.
Noticing small changes early helps you _______ some big changes that are to come.