In the good care of the nurses, the boy is ____ recovering from his heart operation.

Although ____ my opinion, the old professor didn’t come up with his own.

Mother is glad that he’s already done_______ 60% of the work in such a short time.(西安市)

I just keep working hard as I have done, and ________ it will pay off. It has done so far and so I just have to do the same.

As is known to all language learners, the newly learnt words will soon be forgotten unless ______ used in everyday communication.