When my mother died I was very young,/And my father sold me whil

When my mother died I was very young,/And my father sold me while yet my tongue/Could scarcely cry "'weep! weep! weep! weep! *7So your chimney I sweep, & in soot I sleep.
Questions：
A.Who is the author of this stanza,and what is the title of the poem from which this stanza is \aken?
B.What does the word "weep" mean?
C.Based on this stanza,discuss the characteristics of his poems in his early years.