1．(2019·苏州模拟)I have known Tom Jones for years; naturally, he is nervous in case anything ________ go wrong.
A．should B．can
C．must D．will
解析：选A 句意：我认识汤姆·琼斯很多年了；当然，他很紧张，以防出什么差错。in case后面的事情是小概率事件，用“should＋动词原形”。
2．(2019·无锡模拟)—I can't understand why he ________ so angry. I meant no offence.
—It's typical of him to be so sensitive.
A．must have been B．should have been
C．might have been D．can have been
解析：选B 句意：“我无法理解为什么他竟然会如此生气。”“他经常这样敏感的。”should此处意为“竟然”，表示出乎意料；根据“I meant no offence.”中用了过去时可知，事情发生在过去，故选B。
3．(2019·常州模拟)—I spent a week in Xiamen last month.
—Then you must have been overcharged for sea food many a time, ________ you? This city is known for that.
A．mustn't B．weren't
C．haven't D．hadn't
解析：选B 句意：“上个月我在厦门待过一个月。”“你一定因为海鲜食品被宰了很多次，对吗？这个城市宰客是很有名的。”must在句中表示“想必，一定”的时候，其后面如果用反义疑问句，要依据不表示推测的情形来确定。根据句中的时间状语，可知此处是对过去进行推测，用一般过去时。
