小男孩从门缝里偷偷看了一眼客厅里的客人。

The little boy ___peeked through the door crack to see the guests in the living room.

小猫从窗帘后面偷偷探出头来。

The kitten ___peeked out from behind the curtain for a second.

她在考试时偷偷瞄了一眼同桌的答案。

She couldn't help ___peeking at her classmate's answer during the exam.