<p>I don't know where these questions come from but I really don't know how to fix them. </p>
<p>The weather in Arizona and New Mexico (is A) like (some parts of B) California, but (despite this C) similarity (there are D) important climatic differences within these regions. </p>
<p>the correct answer is B but can you tell me how to fix it? </p>
<p>(It would be A) much more efficient for (you and I B) to work together on both projects (than C) for (each of us D) to work separately on one. </p>
<p>the correct answer is D but do you change it to .. both of us? </p>
<p>Thanks!</p>