The strategies that he came up with fine.A. work outB. worked outC. working outD. to work

问题补充：

The strategies that he came up with fine.

A. work out

B. worked out

C. working out

D. to work out

答案：

A. work out

(答案→)B. worked out

C. working out

D. to work out

解析：考察时态。句意：他提出的战略效果良好。只有发生作用了才会有效果，可知叙述的是过去的动作，故用过去时态。