Although Wilkes thought he was almost to the summit, the guides knew they were less than half way up.

As I said, our guides knew no more than we upon this point.

Our guide knew when to take us to the mountain.

The string would then serve as a guide to anyone not knowing the way.

The guide knew that she did not want Creeland to go there.

Our guide might know this way well enough to move on without light, but I was wary.

The tours are tailored to each group, so be sure to let the guide know of your general interests before setting off.

As a result, the guide did not know the world had no oxygen.

But here is the weird part: our guide knows all this because, it turns out, she herself has made the whole scene up.

"But guides know the best time to go out to avoid other vehicles."