please take the letter to the post office mary has gone to fectch water let me carry the box for you the teacher lets every students answer a question i have a problem can you help me jim worked out the phyics problem there are five in the exercise
he brouhgt a new book with him 他带了一本新书 please take the letter to the post office 把信带到邮局 mary has gone to fectch water 玛丽已经去取水了 let me carry the box for you 我来给你那这个盒子吧 the teacher lets every students answer a question 老师让每个学生都回答一个问题 i have a problem can you help me 我有件事你能帮我个忙吗