When you walk through the forest, you will find yourself _______ trees that are over 1,000 years old.
A.among B.against C.behind D.below
—One's knowledge and experience _______ with his days.
—That's true. One is never too old to learn, though.
A.increase B.punish C.spread D.mention
_______you can sleep well, you will lose the ability to concentrate, plan and stay active after one or two nights.
A.Once B.Unless C.If D.When
During the mid-autumn festival, family members often gather together _______ а meal, admire the moon and enjoy the moon cakes.
A.share B.to share C.sharing D.shared
In today's information age, the loss of data _______ cause serious problems for a person's privacy（隐私）.
A.need B.should C.can D.must
—Jack, don't eat too much. You have _______ too much weight these days.
—OK, Mom. I will try to be on a diet.
A.put on B.put off C.put up D.put away
