_____by a group of children,the teacher entered the lecture hall.A.SurroundedB.SurroundingC.To be SurroundedD.Being Surrounded
问题描述：
_____by a group of children,the teacher entered the lecture hall.
A.Surrounded
B.Surrounding
C.To be Surrounded
D.Being Surrounded
答
D。被动态，作状语。
答
C。
因为“by”和前后语境，可知这里应该用被动语态；
再加上“entered”为过去时态
所以应选C
To be Surrounded by a group of children,the teacher entered the lecture hall
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答
a 表状态