She was so flustered that she forgot her reply.

她慌得忘了回答。

《柯林斯英汉双解大词典》

She forgot where she left the car and it took us two days to find it.

她忘了把车停在了哪里，我们花了两天时间才找到它。

《柯林斯英汉双解大词典》

She forgot all about the terrible composition!

她把那篇糟糕的作文全忘了！

youdao

She forgot the cow and hid in some bushes.

VOA: special.2010.04.03

She never forgot these days. Later in life, she wrote: "No deaf child can ever forget the excitement of his first word.

VOA: special.2009.11.08

She died the next day. Woody never forgot her death.

VOA: special.2010.06.13

She forgot to take the tag out, and then she gave it to me.

NPR: The Worst Gift Ever

But she forgot about the gifts and hauled the whole pile to a nonprofit group for needy children.

WSJ: The Sneaky, Cagey Side of the Holidays

Another woman, from Texas, was about to get a double mastectomy when her insurance company canceled her policy because she forgot to declare a case of acne.

CNN: Obama offers health care details in speech to Congress