| 1. | How long will she keep her current job ? 她现在这份工作能维持多久? |
| 2. | How long will it take me to pass customs ? 海关检查需要多长时间? |
| 3. | How long will the program have to last ? 会议的议程将持续多久? |
| 4. | No one knows how long it will last . 谁也不知道罢工会延续多久。 |
| 5. | Say , how long will it take ? 告诉我,需要多长时间能到达旅馆。 |
| 6. | How long will the registered trade-mark remain valid ? 注册商标的有效期多长? |
| 7. | How long will this ability persist ? 这种能力还能维持多久? |
| 8. | Well , how long have you studied english ? 你学英语多久了? |
| 9. | How long does it take to get to tamsui by bus ? 搭公共汽车到淡水需要多久时间? |
| 10. | How long can you hold your breath for ? 你能屏住呼吸多久? |