司机打手势示意我们可以过马路。

The driver ___signaled for us to cross the road.

她突然的沉默暗示着有不好的消息要宣布。

Her sudden silence ___signaled that there was bad news to be announced.

交警用手势示意车辆减速慢行。

The traffic officer ___signaled the cars to slow down.