"Do you know that the train will be along here in less than an hour, and we have a great deal to do before we can get on board?
There's no use stopping to talk about this matter.

We haven't time.

If you will just trust things to me, I'll attend to them all, and I'll answer your questions when we get safely on the train.

Every instant is precious.

Those men might come around that corner ever there any minute.