The mother watched her child playing on the beach, ________ in front of her chest.
—I hear that you will be on travel again. —Yeah. My boss __________ for me to discuss business details with someone from another company.
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? —_______.