【单选题】There are about ________ students in our school. [ ]
【单选题】一竹梯有11条横档,相邻两档间的距离都相等,已知最上一档长 40cm ,最下一档是 50cm ,则从上到下第 7 条横档为( )
【单选题】___________ students in China are learning English at school.
【单选题】you are so eager to join the school basketball team, why not try out for it?
【单选题】—How many students are there in your school? —_______ students, I think.