If we travel a short distance, we should walk _____ taking a bus. Then we’ll be greener people.

No sooner _____ back to the kitchen than the doorbell rang.

The police are looking for a missing boy who is believed ______ a white pullover and blue jeans.

I feel so tired, because there is________ homework to do and it’s ________hot today.

The teacher class when I the classroom at ten o’clock yesterday morning.