【正文】
d the streets with a broom drive a street sweeper swept the streets slowly clean the streets in a short time Mr Yang is a street cleaner. In the past, he cleaned the streets with a broom. He did it slowly. Now he drives a street sweeper. It can clean the streets in a short time. Read aloud Ms Wen is a _____. In the past, she used a ___ and ____ to write her books. It was ____. Now she uses a ____. It is ______ and easier. Mrs Hong is a ______. In the past, she got her crops in by _____. It made her _____. Now she uses a _______. She can do it _______. Mr Zhang is a _______. In the past, he used _____ to take photos. Now he uses a __________. He can see his photos ___________. Mr Yang is a ______. In the past, he swept the streets with a _______. He did it _______. Now he drives a _________. It can clean the s