Question

sentence construction quick check
drag and drop the words into the correct locations. (1 point)
we thought our invention would work, it failed. we will not rest we figure out why.
if than since but until

Explanation:

For the first blank, the sentence shows a contrast between thinking the invention would work and it failing, so "but" is appropriate as it indicates a contrast. For the second blank, the meaning is that they will not rest until they figure out why, so "until" fits as it means up to the time when something happens.

Answer:

First blank: but
Second blank: until