how many用降调。
How many names are there on your books ?你们的登记名册上共有多少人
How many hours a day does she study english ?她一天读几小时英文
How many pictures remained on the camera film ?还剩下多少张底片没照
How many employees are there in the company ?那家公司有多少员工
How many jars of peanut butter have been sold ?已经售出多少罐花生酱
