下列各句中,没有语病的一项是(　　)

It was not _____ she took off dark glasses _____ I realized she was a famous film star.[ ]

The wholeclassgreatly moved at his words

Bob’s___ the branches from the tree. Go and _____ for firewood. Bill! —Do you think I’m really for his kind of work?

It’s helpful to put students in a situation _______ they can learn how to cooperate with each other.