关于英语的问题If I get ___ extra vacation.I will take you around Am

关于英语的问题
If I get ___ extra vacation.I will take you around America next year.
I'm gald to hear that.
A.a B.an C.the D./
He doesn't like Beethoven and ________.
A.neither do I B.neither I do C.so do I D.so I do
You must run _______
A.as quick as possible B.as quickly as possible
C.as quick as possibly D.so quick as possible
We saw them ________ ( come ) into the room while having break.
Do you know when_________?(start)
He was often heard _____ (sing) by the river.
Lucy is always the first ________ (reach) school.
麻烦加上解释,尽量详细点,