Physical Education in schools can teach us endurance — something we all need life bees tough.
A. unless
B. in case
C. though
D. until
网友回答
A. unless
(答案→)B. in case
C. though
D. until
解析：unless除非；in case以防；though尽管；until到……为止。句意：学校中的体育能教给我们忍耐力，忍耐力是当我们在生活中遭遇困境时所必须的东西。