—You are good _____ swimming. Do you want to be _______ our school swimming team?—Yes, I do.A. at, in B. for, on C. at, of
( )—Is this watch__________? —No, it isn’ t. It’ s__________.
( )
( )What’ s__________the picture?
( )—Is her sister a teacher or a student? —_____________.
( )__________look__________the blackboard.
( )—Can I see your photo? —Yes.__________.