5.( ) is the word forming process by which a new word is for

5.( ) is the word forming process by which a new word is formed by adding rather than subtracting elements.For example,“beg” is formed by cutting –ar from the noun “beggar”.
A：Conversion
B：Clipping
C：Backformation
D：Initialism
6.( ) begins with the coming of Frisians,Angles and Saxons into England (roughly 450) to 1066,the time of the Norman Conquest.
A：The Old English Period
B：The Middle English Period
C：The Early Modern English Period
D：The Late Modern English Period