-Zest lemons, then juice, reserve both separately -In a large bowl, whisk the oil, Parmesan cheese, lemon juice, salt and fresh ground pepper. Add the arugula. Set aside -Bring a large pot of water to a boil. Add the pasta and cook until al dente, stirring occasionally, about 8 minutes. 2 minutes before it is finished add the washed grape or cherry tomatoes to the pot.. -Drain the cooked pasta, reserving 1 cup of the cooking liquid. -Add pasta to the lemon sauce and arugula. Add the lemon zest and basil and toss. -Toss the pasta with enough reserved cooking liquid, 1/4 cup at a time, to moisten. Season with more salt and pepper and if wanted, more Parmesan cheese. -Serve