Hangman game backward #7 - guess what was the question:
fill in a "d" - If this is marked on the calendar, you might be in some trouble.
fill in a "h" - Google picture of this, you'll find mostly music sheets and a kind of sport.
fill in a "l" - Open me and you'll usually find your beloved one.
fill in a "p" - It is believed that in some Asia country, this is where some monsters live.
fill in a "r" - "Fly me to the moon, and let me play among the stars"
fill in a "s" - You might feel your lack of power disturbing without me.
Again, your answer can be in the form of:
The question was: _ p p l e
First answer that fully explained each line will be accepted, enjoy!