题目内容
________ was known to them that the boss had broken his promise ________ he would give them a rise.
A.What; what B.It; which
C.It; that D.As; that
C
【解析】C 句意:他们都知道老板已经违背了将给他们涨工资的诺言。第一空处,It作形式主语,指代真正的主语“that the boss had broken his promise...”。promise之后是其同位语从句,从句句意完整且不缺成分,所以填that。
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