单选题 《复合题被拆开情况》　　My friends say I’m trusting. Sure, I’m a "what you see is what you get" kind of person. So【C2】________I expect the same kind of【C1】________from others. But I don’t fall for just anything. And I never would have【C3】________there were aliens(外星人) around, at least【C4】________I saw one with my very own eyes.　　My friend Danny Stone and I were staying in his uncle’s cottage for the weekend. Danny kept telling me stories about aliens frequently visiting the district, even though I said I was【C5】________. Around 3 o’clock in the morning, I was suddenly woken up by a shocking sound. What I saw next almost made my heart【C6】________. Outside, sitting in the branches of a tree, was something that looked like an alien. Danny took a blanket and【C7】________to have a closer look. I 【C8】________at a distance——not that I was afraid; I was smart, I’d watched enough TV to know that aliens couldn’t be trusted! When Danny was【C9】________enough, the alien seemed to【C10】________him, and they both fell to the ground. Danny【C11】________to throw the blanket on top of it. Sensing control over the situation, I ran into the cottage and cried, "Mr. Stone! We【C12】________an alien! "　　Later, I would remember that【C13】________with extreme embarrassment. Danny was【C14】________like mad and threw the alien at me. Even though I could see now that alien was【C15】________packing foam, I couldn’t believe I had been【C16】________in such a way. The alien had been【C17】________in the tree by Danny. He was a better【C18】________than I had ever thought he was. And my【C19】________was far more active than I had ever realized. It all added up to one thing: I was easy to【C20】________. Too trusting. Too believing.《问题》：【C10】