some students may run down the stairs 对run down the stairs提问

some students may run down the stairs 对run down the stairs提问 Some students may run down the stairs during the fire drill Simon advided us----(not run)down the stairs Some students may run down the staris (否定句) she rushed down the stairs walk down the stairs的stairs为什么不能用ladders The apples are f___ down the stairs walk down the stairs quickly.） down,are ,the,falling,apples,stairs. Some students may run downstairs.（对run downstairs提问） 请用run up the stairs造三个英语句子 The apple are falling down the stairs的意思