根据句意在空格上填如适当的单词完成句子.每空一词

问题描述:

根据句意在空格上填如适当的单词完成句子.每空一词
1.Some birds fly ----------- for the winter.
2.Her brother is quiet --------- with my brother.They are close friends now.
3.I like dolphins because they're -------- of interesting.

south
similar
much