1)
From what will they remain?
1.
Rashi: From the plague and sword.
2.
Radak, Malbim: From the sword.
2)
Why will they die in one house?
1.
Rashi: The enemy will burn the house on them when they capture the city.
2.
Radak: They hid themselves in one house ? plague will kill them. "Ten" is not precise; it means many.
3.
Malbim: E.g. they will be a father and his nine children. Plague in the city will kill them.
