A．Make a joke about it and move on．
B．Explain why and how it happens．
C．Keep calm, apologize and continue．
D．Pretend not to notice it and go on．
A．He made roller skates．
B．He made shoes．
C．He made musical instruments．
D．He made wheels．
A．By skating into the room．
B．By playing the violin．
C．By dressing up strangely．
D．By brealdng a mirror at the party．