<p>Because the flood has made the bridge inaccessible to automobiles and pedestrians alike, we had rented a small boat to reach the island. No error</p>
<p>Its in blue book, I want to know why its the answer that it was. I won't reveal it though, for the sake of not ruining the fun.</p>
<p>Edit, i just figured it out!</p>
<p>It should be </p>
<p>we HAVE rented a boat</p>
<p>It should be </p>
<p>we HAVE rented a small boat</p>
<p>well, I think it should be we have to ...</p>
<p>I would say, we rented</p>
<p>but you don't need to express it properly, you just need to know what's incorrect here</p>
<p>well, cuz the first half of the sentense uses the present perfect tense.
I don't think you can use any type of past tense..</p>
<p>and because the flood happens first, its reasonble to use present tense.</p>
<p>but as said, don't even try to figure out a absolute correct answer, just need to know what is wrong, thats enough</p>