2019年mpacc考试英语真题——连词1041

{01}— The man is always behaving rudely.  
— That I guess is ________ people avoid him.

A.because

B.how

C.why

D.Whether

解析：略
本题选C。
{02}— I phoned you at about three this afternoon, but no one answered.
— Oh, that was probably _______ I was doing exercise outdoors.

A.when

B.why

C.what

D.that

解析：略
本题选A。
{03}Where have you been ____ you left home?           

A.before

B.as

C.since

D.when

解析：略
本题选C。