Jim Cramer weighs in on two key earnings reports next week from Walgreen and Monsanto. Jim Cramer says although Rite Aid recently reported a big drop in earnings, that's no red flag for Walgreen's report. He adds that despite the fact that the stock has had a run, it can keep going higher. As for Monsanto, Cramer says whether or not you believe in the genetically-modified space, the company allows the world to be fed in a cheaper way and there is an endless demand for its products. He says Monsanto has been a buy every time the stock has been hit and this time, he doesn't believe it will be any different.