[問題]OG(11th) Diagnostic Test SC-39 （P.38）

[PureRay]

According to scholars, the earliest writing was probably not a direct rendering of speech, but was more likely to begin as a seperate and distinct symbolic system of communication, and only later merged with spoken language.

A) was morelikely to begin as
B) more than likely began as
C) more than likely beginning from
D) it was more than likely begun from
E) it was more likely that it began

正解：B

不過我要問的不是正解....

解答的D說到：

Use of the pronoun it makes this construction a main clause, in which case the comma after communication must be omitted.

解答的E也說到：

The second it acts as the subject of the subordinate clause, and this usage requires the omission of the comma after communication.

我不懂為何那兩個選項需去掉逗點，不知是否有知道的版友，可以為我說明嗎？謝謝