那些骗子利用假投资计划骗走了老人的积蓄。

The ___crooks tricked the elderly out of their savings with a fake investment scheme.

他用拐杖的弯钩勾住了树枝。

He hooked the branch with the ___crook of his cane.

牧羊人用他的木杖引导羊群。

The shepherd guided the sheep with his wooden ___crook.