单项选择题
It is taken as a great contribution made by ______ that...
单项选择题It is taken as a great contribution made by ______ that languages in the world are classified into different language families according to their genetic relations.
Speech Act Theory was first proposed by______.A.John Se...
单项选择题Speech Act Theory was first proposed by______.
In1066, England was invaded by______.A.VikingsB.King of...
单项选择题In1066, England was invaded by______.