2019年mpacc考试英语真题——副词197

{01}Today, we"ll discuss a number of cases _____ beginners of English fail to use the language properly.
[      ]
A.which
B.as
C.why
D.where
解析：
本题选D。

{02}It was April 29, 2011 _____ Prince William and Kate Middleton walked into the palace full of the
wedding ceremony.
A.before
B.when
C.that
D.since
解析：
本题选B。