____ do you go to the movies? — Once a week. [ ]

At present , the terrible foggy haze（雾霾）weather has influenced our normal life badly . So our government should _____ to reduce the air pollution.

Last week Lily’s father bought her__________MP4 as___________birthday present.

I have some problems _____ my Chinese learning. Can you help me with it?—Sure.[ ]

Sally, could you go and help your father wash the car?—Why ____________? I’m busy now. Amy is lying on the grass doing nothing.