—Susan stays alone in the classroom and looks sad—______to her?A.what happens B.what has happened C.what is happening D.what was happening

—Susan stays alone in the classroom and looks sad—______to her?A.what happens B.what has happened C.what is happening D.what was happening
—Susan stays alone in the classroom and looks sad
—______to her?
A.what happens B.what has happened C.what is happening D.what was happening

—Susan stays alone in the classroom and looks sad—______to her?A.what happens B.what has happened C.what is happening D.what was happening
B
用现在完成时 表示过去发生的事 并对现在造成的影响
造成的影响是 Susan stays alone in the classroom and looks sad.
what has happened to her?
她怎么了?或者她发生什么事了?
绝对正确!

a

D

c

A

B，what has happened to her?
表示过去发生的事已经对她造成的影响，用完成时。

b