Welcome to my school. My classroom is next to the school library. And my ['ˈtiːtʃə(r)] is Mrs. Yu. You can (call) her at 88081026.
Look! This is my desk. My schoolbag is on it. is in my schoolbag? A pencil, some books, eraser, a pencil box, a notebook and an ID card are in it. My computer game (be) on the desk, too.
Look at the watch and the ring on the desk. They're not (my). The watch is Jim's. But the ring is not his. It's his (sister). What the baseball? Is it yours? If so(如果这样), you can e-mail me at 123456@qq.com and ask me it. What's that on the desk? Oh, two sets of keys. Mary (lose) her keys this morning. She can't find them in the lost and found box. They must be hers.