好主意，到时她知道了肯定特别开心。
Hǎo zhǔyì, dàoshí tā zhīdào le kěndìng tèbié kāixīn.
Good idea, she'll definitely be really happy when she finds out.
Text 2
啊，我知道了，你说的是李小美吧？
A, wǒ zhīdào le, nǐ shuō de shì Lǐ Xiǎo Měi ba?
Ah, I see, you mean Li Xiaomei, right?
Text 4