Jack likes playing ______ chess, but he doesn’t like playing_______piano.

I want to buy a shirt _____ my father.[ ]

That was a terrible night . The rain was pouring down, _________ thunder and lightning.

Do you know ____________ the population of China is?—Yes, it has the __________ population in the world, about 1.3 billion.

______ comes after (在……后) seven.