1.Science will__give us the right answer to this problem in

1.Science will__give us the right answer to this problem in the future.2.Gravity is a problem to
1.Science will__give us the right answer to this problem in the future.
2.Gravity is a problem to the first settles,so they all agree that the joun=rney to Mars will be __
用所给词的适当形式填空：comfort be