A．They will feel they are disregarded if you make a date far in advance．
B．Different Americans understand the meaning of time differently．
C．Those who are not punctual may be regarded as impolite．
D．Americans needn't make any explanation if he is late for a date．

A．Lord Sandwich．
B．Some inventors．
C．The friends of Lord Sandwich．
D．Some scientists．

A．Kind．
B．Harsh．
C．Stingy．
D．Modest．