题目

According to the report ,the number of animais used in experiments( ) by 30/100 over the year.
（ 求解题方法).这是一道英语选择题,有四个备选答案,分别为 A .was reduced B.has been reduced C.were reduced D.have been reduced.第2题 ---Mary has caught a bad coid.----Has she?I regret( ）her to put on more clothes yesterday.A .not to renmind B.not to be reminded C.not reminding D.not being reminding.

提问时间：2021-01-09

答案

B.has been reduced the number是主语,所以单数,over the year过去的一年期间,一段时间,且已经完成,完成体
C.not reminding 用ing表示后悔做了某事,否定词not前置,用不定式表将来,与regret的意思不合适,而且这儿是主动式,所以C