管理员摘要：
How many years have you been here? 你在这儿多少年了？ How many people came to the meeting? 多少人来参加了会议？ How many legs does a centipede have? 蜈蚣有多少条腿？……
How many years have you been here?
你在这儿多少年了？
How many people came to the meeting?
多少人来参加了会议？
How many legs does a centipede have?
蜈蚣有多少条腿？