ight :correct
sad :sorrow
if :whether
when :while
clever :smart
before :ahead /ago
but :however
till:untill
英语词汇问题写出下列各词的同（近）义词（组）rightsadifwhencleverbeforebuttill
ight :correct
sad :sorrow
if :whether
when :while
clever :smart
before :ahead /ago
but :however
till:untill