Grammar Question

<p>My aunt has been working at a local department store most of her adult life.</p>

<p>(A) My aunt has been working at a local department store most of her adult life.
(B) My aunt is working at a local department store most of her adult life.
(C) Having worked for most of her adult life there, my aunt is at a local department store.
(D) Most of her adult life is when my aunt has been working at a local department store.
(E) A local department store was where my aunt has been working for most of her adult life.</p>

<p>The answer key says that the answer is (A), but why doesn’t it say “FOR most of her adult life?”</p>

<p>Thanks in advance!</p>

<p>In this sentence, the “for” is implied and omitted. </p>

<p>It’s like this. Joe thinks elephants are tiny. Joe thinks that elephants are tiny. Both sentences are correct, but the first one leaves out the “that”.</p>

<p>Sometimes,it is grammatically correct for words like “that” and “for” to be omitted.
Anyway,none of the other choices make sense,so you should blindly tick (A) !</p>

<p>Can you please send me the answer key???
I was looking for it everywhere but can’t find it… Thanks!</p>