When getting into troubles, Jack never ___ on other people for help. He always solves them on his own.

The book was so interesting that we couldn't put it down.

It was                                                                                                              

Thanks to everyone’s efforts, we can do _______ to make school a meaningful place for students living in poverty.

A.a great many

B. a little

C. a great deal

Moderation doesn't mean _____ the foods you love.

A. to eliminate

B. eliminating

C. to prevent

He failed the exam because he didn't study hard.