Zechariah 4: What question does Zechariah ask the angel three times?

Answers:

Zechariah 1: God promised the people of Israel that He would return to them, if they returned to Him.
Zechariah 3: Satan opposed Joshua.
Zechariah 4: He wants to know the meaning of the olive trees on either side of the lampstand. He is told these are the anointed ones.