描述
N/A
es
示例
1
Default Sample
8.-They have been making marshmallows for half an hour.
9.-They have been walking towards the forest for six hours.
10.-They have been traveling to a beach for five hours.
11.-They have been sitting together by the campfire for two hours.
12.-They have been walking in the airport for two hours.
13.-They have been riding bicycles for three hours.
14.-They have liked going to the beach since they visited it in 2016.