_______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
—What are you busy with these days?
—I am collecting _______ for my latest novel.
A.surface B.material C.style D.website
— Jenny, do Chinese people celebrate Easter Day(复活节)?
— No. This is the first time I’ve celebrated festival.
A.the; the B./; the C.the; a D./; a
