他不小心用球棒敲到了自己的头。

He accidentally ___knocked himself on the head with the bat.

长途驾驶后，他在沙发上昏睡过去。

After the long drive, he ___conked out on the sofa.

我的电脑突然死机了，我必须重启它。

My computer suddenly ___conked out, so I had to restart it.