阅读下面短文，按照句子于结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空

    It's a Sunday morning. Jack and his father ____ on a big bus. There are many people on it. Some of them come from America and some from England and ____ (Australian). They are all friends. They are going to the Safari Zoo. ____ Chinese are on the bus. One is a man. He is the ____  (drive). He is driving the bus. The other is a young woman. She is good at ____ (speak) English. She is talking ____ the zoo. She says she likes ____ （panda）best. Because they are cute and only ____ in China. All the passengers(乘客)are listening to her. They like the zoo. It ____ them 20 minutes to get there. They want ____ (get) there soon（很快）.

如图，平行四边形ABCD的顶点A，B的坐标分别是A（﹣2，0），B（0，﹣4），顶点C，D在双曲线y=$\frac{k}{x}$上，边AD交y轴于E点，且四边形BCDE的面积是△ABE面积的5倍，则k=____ 

原产量n吨，增产30%之后的产量应为（      ）