You shouldn't (竞争)with your classmates to get better grades.
Please put all the books back in the right (顺序) before you leave.
I've had a lone (累人的) day. I need a good rest.
Don't worry. The storm won't (持续) long.
In his (八十), I. M. Pei (贝堇铭) designed Suzhou museum for his hometown.
President Xi Jinping (颁发) the Top Science Award to Liu Yongtan and Qian Qihu for their great contributions to science and technology in January, 2019.