billion people already live on our planet,and number is growing ___220,000every day.withB.in C.fromD.by

billion people already live on our planet,and number is growing ___220,000every day.withB.in C.fromD.by
billion people already live on our planet,and number is growing ___220,000every day.
with
B.in
C.from
D.by

billion people already live on our planet,and number is growing ___220,000every day.withB.in C.fromD.by
D by
以多少多少在递增

B

D

growing by不是属于那种很规范的词组，只是by 这个单词的特殊性。很多时候都用by来表示数量的多少 比如
My brother is taller than me by 3 feet.

D