He is the most hard-working students in his class. That means he is more hard-working than_______ in his class.
We should protect the earth because it's home to ____ animals.
The police told the boys ____ in the street .It was dangerous.
— What about going to the zoo by bus? — ____.
It is difficult ____ me ____ English well. But I’ll study harder.
I think Kate is better at playing basketball because she is __ than Jenny.