peep|peeped|peeping

孩子偷看了一眼藏在衣柜里的生日礼物。

The child ___peeped ___at the birthday presents hidden in the closet.

我忍不住从会议室虚掩的门缝里偷看了一眼。

I couldn't resist ___peeping ___through the slightly open door to the meeting room.

他悄悄地从窗帘后面窥视，看是谁在门口。

He quietly ___peeped ___out from behind the curtains to see who was at the door.