1)
How did Moshe place the Mishkan (the lower curtains) before the boards?
1.
Seforno: Either people were holding them 1 or they remained in place miraculously.
1
Which were the main objective of the entire operation (See Seforno).
2)
How did Moshe manage to put up the Mishkan, which was ten Amos tall?
1.
Rashi (in Shabbos, 54b): The Pasuk can be translated to mean that Moshe erected himself to the height of the Mishkan. 1
1
Refer also to 39:33:1:1**.
