I often go to school_____foot, but I had to go to school_____taxi yesterday because of rain.[ ]

Did your classmates have a good time in the Disneyland last weekend?—Yes. They enjoyed _________ very much.

Can you see two butterflies in the middle of the flowers?

I asked the teacher if there an English test the next day.

My father has decided to ______ smoking. –That’s good news for us.