---I find the more we study, the more difficulty we have ________ out Maths problems.---Oh, I agree with you. Maths is more and more difficult.
It’s careless _____ him to make the same mistake again. I think it important ______ everyone to be careful in everything.
The teacher gave ________ children ________ cakes each to eat for their breakfast.
Though I like the house very much, its price __________ my ability to pay.
— I think his suggestion is worth __________of carefully. — I agree __________ you.
__________ valuable advice it is. It will be of __________ great value to me.