_______you write on a subject,you join in an ongoing, trans-historical conversation with others who have written about your topic.
—Who bought you the fresh flower? —It’s from my girlfriend, if you ______ know.
Every man has his faults. We should, therefore, learn to be ______ of others.
— Do you think Li Hua has passed the English examination? — No, If so, he ______ us yesterday.
Daisy ______ all the housework, she dropped herself into the sofa, sighing with relief.
Fortunately , the adventurers brought the GPS with themselves, they might have been lost in the desert.