提几道英语题Mary has ------- got it from her uncle. A. a B. an C.

提几道英语题
Mary has _______ got it from her uncle.
A. a B. an C. the D. 不填
为什么选B不选D 请详细解释
– What a beautiful drawn!
-- ______
A. You’re great. B. I’m proud of you. C. Not at all. D. Thank you.
为什么选A 这句话什么意思 请详细解释