公园长椅上经常能看到无家可归的流浪者。

You can often see ___vagrants sleeping on park benches.

公园长椅上经常能看到无家可归的流浪者。

You can often see ___vagrants sleeping on park benches.

公园长椅上经常有无家可归的流浪汉过夜。

The park benches are often used by ___vagrants for sleeping at night.