It _____ last week that the haze(雾霾)in Beijing caused many problems.

Can you tell me what to wear at the party?—If I you, I the blue jeans.

As the little boy ______ milk now, he doesn’t want to eat any other food.

What can you see_____the picture? — I can see a boy.— Where is the boy?— He is_____the chair. [ ]

Lucy is a _______girl. —Yes, she always studies hard at night.