____the room,a letter was laid on the ground.A.Entering B.Having entered C.He entered D.Mrs Gr

题目

____the room,a letter was laid on the ground.A.Entering B.Having entered C.He entered D.Mrs Gr
D.Mrs Green entering 为什么C不行呢

答案

答案是D
C为什么不行?
解析：C He entered the room ,是一个独立的句子
a letter was laid on the ground 也是一个独立的句子
两个独立的句子中间不能用“逗号”,需要换成句号,或者加连词and