苹果从树上掉了下来。

The apple ___fell from the tree.

他在湿滑的地板上滑倒摔了一跤。

He slipped and ___fell on the wet floor.

气温在夜晚急剧下降。

The temperature ___fell dramatically during the night.

听到这个消息，大家都陷入了沉默。

Everyone ___fell silent upon hearing the news.

那个滑板者被路上的小石子绊倒了。

The skateboarder was ___felled by a small stone on the road.

工人们正在用链锯砍伐那些松树。

The workers are ___felling those pine trees with chainsaws.