behind

我懊恼地发现我把包落下了。

I was annoyed to discover that I'd left my bag ___behind.

请坐在我后面。

Please sit ___behind me.

猫跑到了椅子后面。

The cat ran ___behind the chair.

看！月亮从云后面出来了。

Look! The moon is coming out from ___behind the clouds.

火车晚点了，所以我们迟到了。

The train was ___behind schedule, so we arrived late.