4. Why do you think that William Still recorded information about each of the slaves who passed through Philadelphia on their journey to freedom?

modal adverbs are used to modify specific verbs that consist of a linking verb (verb of being) and sometimes another verb. examples of modal verbs include can, could, may, might, must, shall, should, will and would.

modal auxiliary. an auxiliary verb characteristically used with other verbs to express mood, aspect, or tense. in english, the most common modal auxiliaries are can, could, may, might, must, ought, shall, should, will, and would. also called modal .

i would have to say "a" or "d".

anxious,the clues in the question suggest he was embarrassed and anxious about boo radley.