这句话是什么句型啊?The customs office is where your baggage is inspec

这句话是什么句型啊?The customs office is where your baggage is inspec 问一道高中英语语法题The customs office is（）you get your baggage examin Where is your English teacher She ___ the office. Where is the teacher's office in your school where is the post office? Where is the post office. Where is your office located, Eric? Where is your father?He _____the office. Where is your office located,Eric? where is the home office of this service located?这句话啥意思?主要是s could you tell me where the post office is? 这句话中的 is为什么会放在最后 the excuse office where me post is