35. Why did the two boys go to the sea?
A. To go boat rowing.B. To get back their football.
C. To swim in the open water.
D. To test the umbrella as a sail.
36. What does "it"in Paragraph 2 refer to?
A. The beach.B. The water.
C. The boat.
D. The wind.
37. Why did Tim raise his head regularly?
A. To take in enough fresh air.
B. To consider turning back or not.
C. To check his distance from the boys.
D. To ask the boys to take down the umbrella.
38. How did the two boys finally reach the pier?
A. They were dragged to the pier by Tim.
B. They swam to the pier all by themselves.
C. They were washed to the pier by the waves.
D. They were carried to the pier by Tim on his back.