1.   It was already dark by the time they arrived at their hotel.

2.   It was already dark by the time we started for home.

3.   It was dark by the time he had finished with the left side of the road.

4.   It was dark by the time we pitched camp.

5.   It was dark by the time she got home.

6.   As it was dark by now, no bullets hit them, and they began to swim ashore.

7.   It was nearly dark by the time they reached the hut.

8.   But that was one case that he said and then he said it was getting quite dark by that time when the boat came in it was quite dark.

9.   But it was dark by then, the trip was treacherous, and not even he could make another effort that night.