Math teacher David Benke said he had no time____his life when he stopped a man shooting at students

Now the air in our town is ________than it used to be. Something must be done to stop it.

下列各句中，没有语病的一句是（ ）

By this time tomorrow, I ________ the novel being written at the moment.

一 Have you finished your homework yet — No, not yet. I think it’ll take me half an hour.