Their next move must to be to cross the River.

Not one of them can cross a river by itself.

After all, if the air turned out to be too far away, she would have no way to cross the river.

They won't try again to cross the river by themselves.

She was said to have been the first white woman to cross the river.

She had to find a way to cross the river.

He was the first to cross the river and return in the same day.

They crossed a large river, then a couple of small ones.

It takes about 10 minutes for the average person to cross a river.

The girl ran after him, but could not cross the river.