It was a fine day. Ben and Tim were buying some food in a supermarket.When theywanted to leave,they saw a man. The man was puting many things into his pocket."What's the man doing now?" Ben said. "I think the man is stealing those things. He's a thief!"Tim said. Then the man left the supermarket without paying.Ben and Tim got out of the supermarket, too. The man went to a bus stop opposite to a shop. Ben and Tim were following him. On their way, they were happy to se a policewoman. They went up to him and said," Oh,madam!Look at that man.He's a thief!He has stolen many things in the supermarket!" "Don't be scard. I'll catch him!"The policewoman said. Then she started to run and caught the thief.The man was sorry for the mistake he has made. But Tim, Ben and policewoman were happy to catch him. They went to the police station together.这样应该没什么错误了- -因为是已经发生的事情。用过去时比较好·还有些小的词法,帮你也改了