2019年mpacc考试英语真题——连词426

{01}The dancers, all of _______ masks came off suddenly, gave us a great surprise.

A.their

B.whose

C.which

D.whom

解析：考察从句连词。根据句子结构可知，该局为定语从句，先行词dancers作从句中主语masks的定语，故选择B
句意为，那些演员的面具突然脱离了，他们让我们很惊讶。
本题选B。
{02} ____ is said that the terrible accident happened at midnight.

A.What

B.That

C.It

D.Which

解析：本题考查代词。根据句子结构可知，该处用it作形式主语。真正的主语为从句that the terrible accident happened at midnight。句意：据说，恐怕的事故发生在午夜。
本题选C。