march是延续性动词 We heard a loud sound of drums beating___ the parade marchedA till B while C the moment D once 这道题为什么选while

heard是延续性动词吗? march是延续性动词 We heard a loud sound of drums beating___ the parade marchedA till B while C the moment D once 这道题为什么选while hear from是延续性动词还是瞬间动词We haven't heard from them ____last month.a,since b,by the end of c,for d,until 这题怎么做?since是不是前面一定要加延续性动词,until后面是时间点的话, build是延续性动词吗 wait是延续性动词吗 arrive是延续性动词吗 reach是延续性动词吗 turn是延续性动词吗 leave是延续性动词吗 leave是延续性动词吗 happen是延续性动词吗? cook是延续性动词吗 prefer是延续性动词吗 become study 是延续性动词还是非延续性动词 die 是延续性动词还是非延续性动词? change 是延续性动词还是非延续性动词 begin是延续性动词吗还是非延续性动词?忘了问！怎么变 延续性动词？ shout是延续性动词还是瞬间动词