Betty was ______ all sorts of terrible thi
题型：单项选择题
问题：
Betty was ______ all sorts of terrible things that might happen to her if she were left alone in the mountain.
[A]imagining [B]guessing [C]supposing
Betty was ______ all sorts of terrible things that might happen to her if she were left alone in the mountain.
[A]imagining [B]guessing [C]supposing