Many a specialist______ looking forward to attending that conference now and they______ plants in the last two years to prepare

admin2018-07-12  29

问题 Many a specialist______ looking forward to attending that conference now and they______ plants in the last two years to prepare for it.

选项 A、is: have been studying
B、is: has been studying
C、are: have been studying
D、is: are studying

答案A

解析 本题考查主谓一致。many a意为“很多”,但它强调个体,即“每一个”,因此谓语动词应用单数形式。句中的时间状语是in the last two years,说明句中谓语动词表示的动作发生在过去;结合句意可知,这一动作从两年前开始一直持续到现在,将来可能还会继续,因此第二个空格所在分句应用现在完成进行时,故A)正确。
转载请注明原文地址:https://jikaoti.com/ti/mwUMFFFM
0

最新回复(0)