Yingying a piece of litter, and put it into the rubbish bag.
More and more people ________ and the train soon became crowded.
My teacher is very kind and she always ________ afraid of speaking in public.
You’d better not eat too much ice cream. Your parents _______ your health.
I enjoy playing computer games, but I can’t spend too much time ________ that.
If you continue to steal, you’ll ________ in prison.