.Days of snowstorms have left the city under thick layers of ice and some 50,000 homes without power.
Not until the early years of the 19th century ________ what heat was.
__________cleaning the yard and making up the beds for the old,we also read newspapers for them and had chats with them.
The more one is ______ the English-speaking environment,the better he or she will learn the language.
—Would you mind answering some questions on shopping habits? —_______.
I hope my teacher will take my recent illness into _______ when judging my examination.