Definition: to tell someone something Level: A2
如果你需要帮助，请告诉我。
___Let ___me ___know if you need help.
我想告诉你我会迟到。
I want to ___let ___you ___know that I'll be late.
请尽快让我们知道你的决定。
Please ___let ___us ___know your decision soon.
