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1.When did you send Roberta that e-mail?
1.你是何时发邮件给萝贝塔的?
(A) I saw her this morning.
(A)我今早看到她了。
(B) I received it yesterday.
(B)我昨天收到的。
(C) I sent it last night
(C)我昨晚发的。
