The old man is always hunting the lions, so terrible things ＿＿＿＿＿ happen to him．（上海’96）
A． might B． would C． should D． couldC
12) The fire spread through the hotel very quickly but everyone ＿＿＿＿ get out．(NMET’97)
A． had to B． would C． could D． was able to
该题考查了could和be able to的区别，二者都可表示过去时间的能力，但如果表示过去成功地做了某事只能使用was ／ were able to do，故本题选D。
13) —Shall I tell John about it ﹖
—No, you ＿＿＿＿＿． I’ve told him already． (NMET’94)
A． needn’t B． wouldn’t C． mustn’t D． shouldn’t
情态动词shall在试题中表示征询对方意见或请求指示。答句暗示 “没有必要了”，故本题选A。