A：that, that
B：that, whe
C：when, that
D：when, which
①承担起对社会的责任 ②帮助他人 ③使自身价值在奉献中得以提升 ④提高实践能力，增加社会经验 ⑤对自身而言，只有付出，没有收获
2016•连云港） —Shall we take a car?
—No, we . It's only five minutes' walk.
