Yes, you can.
However, you can only add multiple Landers with one offer.
In case you've got one Lander with multiple Offers, you'll have to generate unique Click URLs for each one of those offers.
You can generate those Click URLs on your Account.
Then, on your own Lander, you'll have to add each Click URL.
Since the offers are connected to each Click URL, the Offers from that Path won't have any weight.