Paper money was in ______ use in China when Marco Polo visited in ____ thirteen century.
—Oh,you sounded just like a native.—________Why didn't you call us earlier?
—What fruit is in season now?—Pears and apples,________.
—Your mum is very kind.—Yeah.My mum is pretty considerate,you know what ________,she always arranges everything around me.
—I have tried very hard to find a solution to the problem,but in vain.—Why not consult with Frank?You see,________.
—My teacher says she's canceling the class play.I just can't understand.—________.You were looking forward to it.(2011·福建,35)