______ you come across some new words, don’t refer to your dictionary at once but guess their meanings according to the context. 

 ________ you have to do the job, you should try your best to do it well even though it may be very difficult for you.

—Children must have access to good books.—I can't agree more. Reading is to the mind ________ food is to the body.

 I was about to leave_______ something happened, which attracted my attention.

. My father likes outdoor activities,_______ my mother prefers staying at home.