Mrs.Wang is shopping at the supermarket. 王太太正在超级市场 买东西.
Mrs.Wang is shopping at the toy store. 王太太正在玩具店买东西. Mrs.Wang is shopping at the department store. 王太太正在百货公司 买东西. Tony is sitting on the bus. 托尼正坐在公共汽车上.
Tony is standing on the bus. 托尼正站在公共汽车上. Tony is talking on the bus. 托尼正在公共汽车上谈话. Tina is studying at the library. 蒂娜正在图书馆看书. We are doing our homework at the library. 我们正在图书馆做功课. I am writing a letter at the library. 我正在图书馆写信.
