Chinese people __________ important things.
A：gets
B：printed
C：invented
用反证法证明命题：“一个三角形中不能有两个直角”的过程归纳为以下三个步骤：①A+B+C=90°+90°+C>180°，这与三角形内角和为180°相矛盾，A=B=90°不成立；
②所以一个三角形中不能有两个直角；
③假设三角形的三个内角A、B、C中有两个直角，不妨设A=B=90°，
正确顺序的序号为（ ）
My brother____ ____ ____ ____last month.
Martin looks so well. We've never seen him ______ so well before.
There ______ a bank and two pay phones near here.
