2019年mpacc考试英语真题——连词583

{01}Is this the reason ___ at the meeting for his carelessness in his work?

A.he explained

B.what explained

C.how he explained

D.why he explained

解析：关系代词that是explaine的宾语，这时被省略了。
本题选A。
{02}I wonder ____ we can solve this hard problem.

A.what else

B.how else

C.that

D.as if

解析：考连词how else的用法。how else="in" what other way。如选A项，句子应当改为:“I wonder what else we can do to solve this problem”而用C、D项不合句意。
本题选B。