Question

It’s very dangerous ______  _ children to cross the busy street.

A．for

B．of

C．to

D．by

Answer 1

A               

             
試題分析：考查介詞。句意　對于孩子們來說，穿過馬路是十分危險的。考查　it　is adj for sb to do sth ,對于 某人來說做某事是…。For sb 對于某人來說，it 做形式主語。所以選A項。