1个回答
1HOW 是问CAREY怎么样回到她自己的家。
2BUT是连词连接2个句子，因为前面已经有STAYS这个动词了，后面HAS是动词谓语形式，同一个句子不可能有两个动词做谓语。句子意思刚好表达转折的意思所以用BUT。
3 HAD前面却主语 主语一般都是用WE.表达。
4 WITHOUT是介词后面用动词的ING形式表伴随。
she saw an advertisement recruiting（征募） host families for foreign students, and that was __1___ Carey (from Chicago, US) came to her home. Carey is actually not a student, but a manager. She stays in Li's apartment for free， __2___ has to teach Li oral English for 1 hour every day. “She could hardly speak Chinese at the beginning, and __3___ had to guess what each other meant through gestures, ”said Li. Two months later, they could talk to each other __4___ gesticulating（做手势）. Now, Li can communicate with any English-speaking person freely. About one hundred Shanghai families have received foreign boarding students, and the figure is rising .答案是：1.how 2.but 3.we 4.without 我需要解释为什么这个答案！谢谢！