The 32 species that make up the dolphin family are closely related to whales and in fact include the animal known as the killer whale, which can grow to be 30 feet long and is famous for its aggressive hunting pods.
include the animal known as the killer whale, which can grow to be 30 feet long and is
include the animal known as the killer whale, growing as big as 30 feet long and
include the animal known as the killer whale, growing up to 30 feet long and being
include the animal known as the killer whale, which can grow as big as 30 feet long and is
include the animal known as the killer whale, which can grow to be 30 feet long and it is
答案A,D为什么不行?我开始很难在grow to be和grow as big as中做出选择,最后还是选错了,所以不明白grow as big as错在哪里?