past

While they ____ , they saw a fence.

• walked

• were walking

• walk

• have walked

They ____away one night while it was raining.

• were running

• run

• have run

• ran

While he ____ in the wilderness, he met a lot of people who helped him .

• wandered

• was wandering

• has wandered

• wanders

While they ___(sail)____ the sea, a terrible storm destroyed the raft.

When the men were sailing on the ocean, they ___ many sea creatures.

• saw

• see

• were seeing

• have seen

While he was living in an abandoned bus, he __(realize)___ he might die.