A:①② ③
B:①②④
C:①③④
D:②③④
These shoes aren't comfortable. You __________ wear them.
一辆拖拉机每趟可运苹果40筐,一个果园要运7200筐苹果,用18辆这样的拖拉机来运,要运____趟?
填图:请填出图中战国七雄的名称:A____ ,B____ ,C____ ,D____ ,E____ ,F____ ,G____ 。