下图为内蒙古某山一处花岗岩“石林”景观。完成下列小题。
如图,已知MB=ND,∠MBA=∠NDC,下列条件中不能判定△ABM≌△CDN的是( )
工人师傅在用方砖铺地时,常常打两个木桩,然后沿着拉紧的线铺砖,这样地砖就铺得整齐,这个事实说明的原理是____
They got two free tickets to Canada; otherwise, they'd never have been able to ______ to go there.