This beginner’s Chinese dialogue talks about forgetting things.
说实话 is useful to know, and is very common in spoken Mandarin.
我忘了妈妈的生日
莉莉：艾玛，我有个大麻烦。
艾玛：什么事？
莉莉：明天是我妈妈的生日，但是我还没有买礼物。
艾玛：你为什么没有买礼物？
莉莉：说实话，我忘了。
艾玛：那你马上出去买礼物！
莉莉：我不知道我应该给她买什么。
艾玛：我跟你去商场吧，我可以帮你选一个合适的礼物。
莉莉：好的，谢谢。
Lily：Emma, I have a big problem.
Emma：What’s up?
Lily：It is my mother’s brithday tomorrow, but I haven’t bought her a present.
Emma：Why didn’t you buy a present?
Lily：To be honest, I forgot.
Emma：You go out and buy a present immediately!
Lily：I don’t know what I should buy for her.
Emma：I will go with you to the shopping mall. I can help you choose a suitable present.
Lily：Ok, thank you.
https://hskreading.com/wp-content/uploads/2019/02/i-forgot-mothers-birthday.wav?_=1
问题
1 – 他们会去什么地方？
a. 机场
b. 工厂
c. 广场
d. 商场
2 – 莉莉为什么没有买礼物？
a. 因为她没有钱
b. 因为她没有时间去买
c. 因为她忘了
d. 因为她不想要买礼物