他喊道“小心！”，但为时已晚；她已经打翻了灯。

He shouted "___Watch ___out!" but it was too late; she had already knocked over the lamp.

当你养猫时，你需要小心你的窗帘，因为它们可能会被抓坏。

When you have a cat, you need to ___watch ___out for your curtains, as they might get scratched.

过马路时总要小心，以避免事故。

Always ___watch ___out when crossing the street to avoid accidents.