she heard a continual strange noise coming from the next room.her heart ___ fast.

问题描述:

she heard a continual strange noise coming from the next room.her heart ___ fast.
A beat B beats C beating D beaten
she heard a continual strange noise coming from the next room,her heart ___ fast.

room后面的标点符号是句号的话,选 A,beat 为过去式
room后面的标点符号是逗号的话,选 C,现在分词短语表伴随状态.句号围什么选A?求解,谢谢!是句号的话这就是两个独立的句子。 Her heart ____ fast.缺少的就是谓语,只能选A或B.A是过去时,B是一般现在时,因为前面句子是过去时,时态要一致,所以选 A.