The young mother often _________ her child alone at home.

Can you come on Monday or Tuesday, John?—I’m afraid _______ day is possible. I will be very busy on those two days.

When __________ the Kings __________ to China?

Do you often play _________ soccer with your friends?—No, I don’t like sports. I often play ________ piano in my free time.

Today some new-produced mobile phones can take pictures _____ a camera.[ ]