看到蛇后，他慢慢后退了几步。

He slowly ___withdrew a few steps after seeing the snake.

在争论变得激烈后，他默默退出了讨论。

After the argument got heated, he quietly ___withdrew from the discussion.

他昨天从银行账户里取出了1000元应急。

He ___withdrew 1000 dollars from his bank account for an emergency yesterday.

他因为证据不足撤回了对同事的指控。

He ___withdrew the accusation against his colleague due to lack of evidence.