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.

43 . Why does the author call her parents’ bed her “safe zone”（Paragraph 3）? (A). It is her favorite place to play. (B). Her needs can be satisfied there. (C). Her grandparents’ photos are lined on each side. (D). Her parents always play together with her there.