Questions 15 to 18 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now, listen to the passage.

How long did the trip last

A．The final will count for 50%, the research project for 30%, and the mid-term for 20%.
B．The final will count for 50%, the research project for 20%, and the mid-term for 30%.
C．The final will count for 40%, the research project for 30%, and the term paper for 30%.
D．The final will count for 40%, the term paper for 30%, and the mid-term for 30%.

A．In his house in southern Dili.
B．In the street of Dill downtown.
C．At his base in a town south of Dili.
D．At the base of his house south of Dili.