问题
单项选择题
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
答案
参考答案：A
解析： 在复合句中，如果主句中有suppose的时候，其从句应该用虚拟语气，即should+do的结构；image的意思是“想像，猜想”；guess的意思是“猜”。