问题补充：
Mary three of her classmates invited to the party.
A. as well; has been
B. and; have
C. as well as；was
D. as good as; were
答案：
A. as well; has been
B. and; have
(答案→)C. as well as；was
D. as good as; were
解析：考查主谓一致。固定词组as well as和…;谓语动词与Mary保持一致，用单数；句意：玛丽和她的三个同学被邀请参加聚会。
