--- _______ do you play computer?
--- Once a week, only on Saturday evening.
A、HowmanyC
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—Which do you like ______, tea or coffee?
—A cup of tea, please.
I'll arrive at 10:00 a. m. tomorrow. Will you please meet me at the airport?
------___________.
Before you leave the classroom ，please __the lights.
-This kind of sports is exciting.
-Yes, but it's dangerous. One can't do it_______ he or she has got some training.
-I'mafraidacaristooexpensiveforme.
-ButmoreandmoreChinesecan_______tobuyone.
