Nowadays, many people prefer ______ to the countryside _______ the fresh air.
It is a worldwide custom that the energetic young are ______for their youth and creativity.[ ]
That winter we ______to write a history of our school.
If you cannot have a good command of grammar as well as precise usage of each word you’ve learnt, it is ________ for you to use English flexibly
I want to know all negative effects the Internet our lives.