writing Question

[Afaloo]

<p>When the first department stores opened in the late nineteenth century, A(they) were cavernous, no-frills storerooms that B(stock) a hodgepodge of items C(preciously available) D(only from) specialty merchants. No error</p>

<p>The answer is B, could you please explain that to me?</p>

[20Summer08]

<p>The statement is past tense “opened” - so B should be stocked to match opened.</p>