This kind of bamboo is suitable _____ pandas _____ eat.[ ]

Let’s play computer games _____ a while.[ ]

Is the woman walked past just now your teacher?-Yes. She teaches English.

Please keep the window _____, Jack ! It’s so hot!—Ok! And may the door be ______ now?

Tony, can you come and help me now?—Sorry, I _________ my favorite show, I’m a singer.