The best way Tom thought of_________ his strength is to run for 30 minutes every day.
A.building up
B.to build up
C.build up
D.being built up
网友回答
B解析考查固定短语。The way to do sth/of doing sth做某事的方法；Tom thought of是定语从句修饰先行词the best way.句意：TOM考虑的最好的增强体力的方法是明天跑30分钟。