I guess Peter and his sister Sally enjoyed __________ at the dancing party.
Ella improved her way of study. _________, she has made great progress.
_______ the teachers in the school is one hundred, and ______ of them are women teachers.
They were ________ busy ________ with each other ________ the time.
Tell me ______________.
If you want to buy an expensive camera, we have several models for you ________.