According to the air traffic rules, you ___ switch off your mobile phone before boarding.
| A．may | B．can | C．would | D．should |
21. For more information, please send an e-mail, ______ you can also include your advice to us.
| A．when | B．where | C．which | D．that |
The prize will go to the writer ________ story shows the most imagination.
| A．that | B．which | C．whose | D．what |
（年山东日照市高三校际联合检测）3．The movie is adapted from a novel，____author I can’t remember now．
| A．which | B．where | C．what | D．whose |
In Australia, surfing is a popular sport among young people ____ they can seek excitement and adventure.
| A．that | B．which | C．where | D．how |
（年北京市西城区高三5月二模试题）35. Paris has some great museums ______ visitors can see fine works of impressionist painters.
| A．where | B．which | C．that | D．when |