阅读短文，从方框中选择适当的词填空（每次限用一次）

But  happy   Nobody   friends around

This morning a big rock was in the way. (86)_____knew where it was from. All the cars had to go(87) _____it. Ben saw the rock. He tried to move it. (88)_____it was so heavy. He called three of his (89)______to help. Little by little the rock was moved out of the street. They pushed it to a nearby park. Ben was (90)_____ to see people sit on the rock in the park.