1.The fact has worried many scientists ______ the earth is becoming warmer and warmer these years.
2.-Is there any possibility ______ you could pick me up at the airport?
【答案】B。中公讲师解析：Is there any possibility that...“有……的可能吗?”that在句中引导同位语从句，补充说明possibility的具体内容。that在从句中无实际意义，但不可省略。
3.—It’s thirty years since we last met.
—But I still remember the story, believe it or not, _____we got lost on a rainy night.
【答案】B。中公讲师解析：先行词为story，that引导的同位语从句，句意完整，被believe it or not间隔开。“——自从上次见面已经三十年了。——但是，信不信由你，我依然记得我们在雨夜迷路的事”。
4.Do you have any idea _____is actually going on in the classroom?
5.As far as I see, _____is no possibility____he will win the tennis match this time.
A. it; that
B. there; that
C. it; whether
D. there; whether
【答案】B。中公讲师解析：考查there be句型与同位语从句。There is no possibility that…“……是不可能的。”抽象名词possibility后接that引导的同位语从句。
6._____seems to be no possibility ____Li Hua can win the first prize in the 100 –meter race.