boggle|boggled|boggles

面对这个艰巨的任务，他没有犹豫，立刻开始行动。

He didn't ___boggle at the difficult task and started working right away.

他看着数学考试题目直发愣，一道也解不出来。

He ___boggled at the math exam questions, unable to solve any of them.

面对高空跳伞，他犹豫了。

He ___boggles at the idea of skydiving.