---_________ a day do you brush your teeth? ---Twice.
--- Hi, Ann. How can you improve your English so much?--- Oh, nothing difficult. The _____ you work at it, the _____ progress you will make.
--- Did Jack come back early last night?--- Yes. It was not yet eight o’clock ______ he arrived home.
---Why are you so happy?--- ______ the teacher’s help, I found the answer ______ the question.
--- What he enjoys _________ great and interesting.--- Yes, but it’s dangerous.
---What is happening over there?--- Oh, about ________ the fans are waiting here. They want to see the great singer.