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

It is said that the gravity on Mars is only about __________ of the gravity on earth．

He goes to sleep ___his bedroom light ____ every day.[ ]

Are you _______ American or English? — English. We both work in Shanghai.

There is ________ juice or ________ vegetables in the fridge . So we must buy some today .