alone

他喜欢独自一人去电影院看电影。

He prefers to go to the movies ___alone.

公园里只有一棵树孤零零地立着。

Only one tree stands ___alone in the park.

她独自一人在教室里。

She was ___alone in the classroom.

光有一个名字是不够的。

A name ___alone is not enough.