Betty, what are you doing now? —I’m waiting ____________ the bus. It takes me to school every morning.[ ]

I heard him _______ the piano in the next room at 10:00 last night.

____ do you go to school in the morning? — At 7: 30. [ ]

I will stay at home and read some books if it _________ tomorrow.

My parents will go to Mount Emei for ____ holiday. –That means you will have to be at home by _____.