Answer:
Hugo's parents told him that he and his brother would spend a month or two on vacation in England and then they would pick them up. However, it was all a lie.
We can arrive at this answer because:
Hugo's parents wanted to free him and his brother from the violence of the Naxists against the Jews.
They knew that everyone would be persecuted and possibly exterminated.
For that reason, when they had the chance to send their children to England they didn't think twice, as it was the children's only chance to escape.
Hugo's parents knew that he and his brother would be very sad to know the real reason for the trip, mainly because the chances of never seeing their parents again was very high, for this reason, they lied to their children so that they could make the trip with more peace of mind.
Step-by-step explanation:
Hope it's help