问题补充:
In the darkness, she felt , but when she turned around, nobody was there.
A. to follow
B. following
C. to be followed
D. being followed
答案:
A. to follow
B. following
C. to be followed
(答案→)D. being followed
解析:“feel感觉到”后面要跟v-ing形式。有人跟着她,即她被人跟着。故要用动名词的被动式。句意:黑暗中,她感到身后有人跟着,但是等她转过头来看时,却没有人。