玛丽经常给朋友发电子邮件Mary often( )( )
问题描述：
玛丽经常给朋友发电子邮件
Mary often( )( )
答
Mary always send e-mail to her friends.
Mary's friends are sent e-mail usually.
答
Mary often sends E-mail to her friends
Mary ofter write to her friends by E-mail