[求助]大全789

大全789

The new regulations mandate that a company allows their retiring employees who would otherwise lose group health care coverage to continue the same insurance at their own expense for a specified period.

(A) that a company allows their retiring employees who would otherwise lose group health care coverage to continue

(B) companies to allow their retiring employees who would otherwise lose group health care coverage that they can continue

(C) that a company allow its retiring employees who would otherwise lose group health care coverage to continue

(D) companies allowing a retiring employee whose group health care coverage would otherwise be lost the continuation of（C）

(E) companies to allow a retiring employee whose group health care coverage would otherwise be lost he continuation of

答案是C，我想问下mandate除了后面加that以外，还有什么用法么？

谢谢NN~