--I think your father is very busy.--So he is._______ he still takes a walk with us sometimes.
—Is _______ here ?—Bob is not here.
—What are you going to give your mother for her birthday?—I’m not sure. But I’ll buy her _______.
— Who will go to the _____ for teeth cleaning with you, Mark?— My father.
If you play sports ______a living, your job will sometimes be very dangerous.A. for B. at C. by
How about to your friends?A. talking B. talk C. to talk