Choose the option that best expresses the meaning of the highlighted idiom/phrase:
I've been beating my brains out to find a way to get the money to her in time.
1
eagerly waiting
2
think very hard
3
hitting my head hard
4
sweating out
Choose the option that best expresses the meaning of the highlighted idiom/phrase:
I've been beating my brains out to find a way to get the money to her in time.