protrude|protruded|protrudes|protruding

他的耳朵从帽子下面明显地伸出来。

His ears ___protruded noticeably from under the hat.

他的衣袋里有一支笔露了出来。

A pen ___protrudes from his shirt pocket.

那块突出的石头很容易绊倒人。

The ___protruding rock is easy to trip over.