中级
单选题请回答17__________题。
参考答案：C进入在线模考
Woman.. It's too bad that our flight is delayed for an hour. Our plane is supposed to leave at 9: 10, but now it's already 10: 00. Let's go to Gate 2 and wait for the check-in. I'm a little nervous. I am flying for the first time.
最新试题