我忘了今天是你的生日。

I ___forgot that today is your birthday.

试着忘记那些不愉快的回忆，专注于当下。

Try to ___forget those unpleasant memories and focus on the present.

别忘了锁门，否则可能会不安全。

Don't ___forget to lock the door, or it might be unsafe.