--Hi, Peter. How can you improve your maths so much?--Oh, nothing difficult. The _______ you work at it, the _______ progress you will make.
Look! Jack and his monkey _________ flying disk together in the garden.
Peter likes music _________is very loud and energetic.
If you sit in a chair _____a long time, your back may begin to hurt.
Photography can be ______excellent hobby for kids.
Tell Sally to call _____, please.