I don't really work here.I ( ) until the new secretary arrivers.a.just help outb.have just helped outc.am just helping outd.will just help outwhy?

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I don't really work here.I ( ) until the new secretary arrivers.a.just help outb.have just helped outc.am just helping outd.will just help outwhy?
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I don't really work here.I ( ) until the new secretary arrivers.a.just help outb.have just helped outc.am just helping outd.will just help outwhy?
I don't really work here.I ( ) until the new secretary arrivers.
a.just help out
b.have just helped out
c.am just helping out
d.will just help out
why?

I don't really work here.I ( ) until the new secretary arrivers.a.just help outb.have just helped outc.am just helping outd.will just help outwhy?
选C.因为第一句话用的是一般现在时,说明是现在发生的事情.那B和D都不对.第二句后面接until the new secretary arrives,说明这件事情是现在正在持续进行的状态,所以用现在进行时,选择C.

C

C 是持续状态,一直工作到新秘书来。

C,因为这是告诉我们,我现在只是帮助直到新的秘书来,属于现在进行时,需用:be+doing

C until引导的时间状语从句要用到主将从现,但为了表达持续一段时间的状态所以用C

c

C

c?