--Mary, have you got my email? I sent you a birthday card yesterday.
---Oh, really! I haven't ＿＿＿my mailbox yet.
A. seen
B. checked
C. received
D. answered
网友回答
A. seen
(答案→)B. checked
C. received
D. answered
解析：A. seen看见，强调看见的结果B. checked检查C. received接收，强调被动的接收D. answered回答；句意：玛丽，你有没有收到我的邮件？我昨天给你发了一封生日卡片。哦真的吗？我还没有来得及检查我的邮箱呢！故选B