When the day of Pentecost came, they were all together in one place. Acts 2:1
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If you follow the pronoun 'they' backwards, you finally discover who was being referred to in:
1.15 ¶ And in those days Peter stood up in the midst of the disciples, and said, (the number of names together were about an hundred and twenty,)
So 'they' the 120 were all together. But did 'they' get the Spirit?
Peter quotes Joel to say that the prophecy was fulfilled that day:
17 And it shall come to pass in the last days, saith God, I will pour out of my Spirit upon all flesh: and your sons and your daughters shall prophesy, and your young men shall see visions, and your old men shall dream dreams: 18 And on my servants and on my handmaidens I will pour out in those days of my Spirit; and they shall prophesy:
In order for Joel to be fulfilled, daughters, servants and handmaids had to be included in the number. This suggests that all 120 got the Spirit.