9.I don't really work here; I___ until the new secretary arrives.A.just help out B.has just helped out C.am just helping D.will just help out 为什么不是A?

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9.I don't really work here; I___ until the new secretary arrives.A.just help out B.has just helped out C.am just helping D.will just help out 为什么不是A?
9.I don't really work here; I___ until the new secretary arrives.
A.just help out B.has just helped out
C.am just helping D.will just help out
为什么不是A?

9.I don't really work here; I___ until the new secretary arrives.A.just help out B.has just helped out C.am just helping D.will just help out 为什么不是A?
答案C,这里强调“一直”,根据题目还隐藏着直到新的秘书来为止我还将在这工作的意思,而A是一般现在时,这里不是一般性的规律,所以选C

c是我正在帮忙, 而且将一直帮忙至到新secretary 来, A是我帮忙, 没有说明时态, 而且与下段不配.

进行时啊
说这段时间进行的工作
强调

A.中的 help out 的用法 1、help sb out 2 help out sb
然而根据句中实际情况,此处需要一个不及物动词 help 可以及物也可以不及物。然而help out 就没有此功能了。 也就是说 有help out的选项全部踢掉。
所以 选C

chose a ,