The matter__________your study surely requires__________carefully.
Attention,coffee lovers! We have for you,the best coffee machine ______ invented.
The hurricane damaged many houses and business buildings;_________,it caused 20 deaths.
The performer was waving his stick in the street and it ___ missed the child standing nearby.
I hear____ boys in your school like playing football in their spare time, though others prefer basketball.
Of the two sisters, Betty is_______ one, and she is also the one who loves to be quiet.