Problem: The man has got a prize for his outstanding term paper and he's going to have a dinner with the university president, but he doesn't know what to wear. Solutions: Solution 1: Wear suit. Problem不记得了。Conclusion: He doesn't have one and he doesn't have time to buy one either. Solution 2: Wear casual clothes. Problem不记得了。Con: He's not sure if it's okay.
The speaker has a problem that he doesn't know what to wear on the dinner with the university president, since he won a prize for his outstanding term paper. There are two solutions. Firstly, he can wear a suit. This is the most proper wear for formal occasions, but he doesn't have one and there’s no time for him to buy one. Secondly, he can wear casual clothes, but he’s not sure whether it’s formal enough. Compared with these two solutions, the first is better, because he is an excellent student, and he will need to attend more formal occasions in the future. Therefore, a set of suit is quite necessary. (111words)