下列词语解释不正确的一项是(　　)

To be a promising student is not an easyjob. It takes time.— I can’t agree more. _______.There is no short cut.

I have so much homework to do that I don’t know ________.

your working conditions improved—No, _____ than before, I’m afraid.

Why not join us in the game, Joe? —________, but I have to finish reading thebook first.