听下面一段对话，回答13至15三个小题。
()13. Why does David look tired?
A. He didn't sleep well last night.
B. He stayed up late to finish a project.
C. He worked out for a long time.
()14. What did the woman do last night?
A. She read a book.
B. She watched a documentary.
C. She did some housework.
()15. What was the documentary about?
A. Wild plants.
B. The history of a city.
C. The living habits of wild animals.

13.B 14.B 15.C

听下面一段对话，回答16至18三个小题。
()16. Where does Mary first suggest going for the weekend trip?
A. The beach. B. The mountain. C. The city park.
()17. What does Mary advise to take for hiking?
A. A tent and a compass. B. Snacks and sunglasses. C. Some water and a map.
()18. What does Mary remind the man to pack in the end?
A. A camera. B. Some snacks. C. Extra clothes.

16.A 17.C 18.B

听下面一段对话，回答19至21三个小题。
()19. What did the woman do on the farm when she was a kid?
A. Fed chickens and picked fruits.
B. Rode horses and milked cows.
C. Swam and rowed boats.
()20. How does the man know about farms?
A. He visits them often.
B. He only sees them in movies.
C. He grew up on a farm.
()21. What else did the woman and her grandpa do on the farm?
A. Go fishing in the river.
B. Feed pigs and sheep.
C. Ride bicycles around the farm.

19.A 20.B 21.A