The answer is flagellum; flagella
The verb here is "had given"; this is past perfect: it's a perfect tense, because it has a past participle with the -ed ending ("given") and it's the past perfect because the auxiliary verb is the past form of "have": had.
I think its called yokogaki
B. me
You just remove the name Dave.
So it says
Give the candy to ___
And you can't say I or they or we.