Seeing as you are all so tired, we'll finish this lesson next time.
考虑到现在你们都很累了,这课我们下次接着讲吧。
If he doesn't, will you fix it?
如果他不,你会修理它吗?
If it is not a question of resting the body, then perhaps it is the brain that needs resting? This might be a plausible hypothesis were it not for two factors.