Мы очень устали, так как гуляли в г

Мы очень устали, так как гуляли в горах с раннего утра

Results (English) 1:

We are very tired, because walking in the mountains in the early morning

Results (English) 2:

We were very tired, as were walking in the mountains in the early morning

Results (English) 3:

We are very tired, as walked in the mountains from early in the morning