Question

They were very.. .in the expedition(INTEREST)​

Answer 1

Ответ:

Interested

..................

Answer 2

It seems like you're looking for a way to complete the sentence "They were very..." with a word related to the concept of "interest" in the context of an expedition. The word you might be looking for is "engaged." So, the completed sentence could be: "They were very engaged in the expedition." This implies that the individuals involved in the expedition were actively interested and participating in it.