Question

【题目】The two girls _____ how to dance one month ago and now they can dance well.

A.taught
B.have taught
C.are taught
D.were taught

Answer 1

【答案】D
【解析】句意：这两个女孩在一个月以前学跳舞，现在他们跳的非常好。主语和谓语动词之间是动宾关系，所以用被动语态be done，根据时间one month ago可知用一般过去时态。根据主语是复数，所以系动词用were,故选D。