Q:Read the following article and select the best answer. Article: Hi, my name is Wang Jun. Do you want to know about my staying in America? Well, to tell you the truth, it is really an eye-opening experience here. In China, I had English classes five times a week since Grade Five. But I didn't know textbook English could be so different from everyday English until I came to Hotchkiss School, Connecticut. When I first studied English, I was told to say "I'm fine." when people say "How are you?" But in the USA, I found that people say "I'm good." or "I'm tired." One day, someone greeted me with "What's up?" It made me _ I thought for a moment and then smiled because I didn't know what to say. Since then, I have learnt more and more differences between Chinese and American cultures. To my surprise, American girls spend a lot of time in the burning sun getting a tan . In China, girls try every possible way to keep their skin white. American students are hard-working like Chinese students. In China, schoolwork is almost everything, so we study hard and that's it. But here, a "good" student not only gets good grades, but also does a lot for the public. That is to say, they get lots of knowledge at school and learn many life skills from social work. Question: American girls make Wang Jun feel surprised because _ . - they work hard at school - they try to keep their skin white - they hope to get a tan - they do lots of social work
A:
they hope to get a tan