问题
Don’t go out ______ school nights because you have too much homework. [ ]
A: in
B: at
C: of
D:on
B: at
C: of
D:on
正确答案是：
同类题型
How much money did you pay for the drink?—None. It’s ______.
Rick often plays volleyball______ his friends.[ ]
TV and computer are so popular these days.—Yes, they can______ our eyes to the outside world.
Can a plane fly _____ the Atlantic Ocean?—Yes, but it needs to go _____ the clouds for hours. [ ]