He must have gone out. I heard the noise of the door ______when I was still in bed.

.With a basket on her back, the little girl is walking along the stream with green grass and red flowers ____ on both sides.

 ________that I could use a special piece of cloth to attract people's attention, I decided to do an experiment.

— You look upset. What is the matter ?— I lost my handbag _______ my ID card and a lot of cash.

_____ computer games, his parents were very worried about his study.