2. 外语
  3. Electronic mail to describe an upcoming workshop should use only if potential participants use this form of communication regula

Electronic mail to describe an upcoming workshop should use only if potential participants use this form of communication regula

admin2012-01-27  46
问题 Electronic mail to describe an upcoming workshop should use only if potential participants use this form of communication regularly.
选项 A、Electronic
B、should use
C、if
D、regularly
答案B应改为should be used。
解析 主语是物(electronic mail)，故谓语应用被动语态。
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