After completing and singing it. Please return the form Wap版

试题详情及答案解析

After completing and singing it. Please return the form to us in the envelope _____.

A．providing	B．provided
C．having provided	D．provide

答案：B

试题分析：分析句子结构可知，设空处所填词作envelope的定语，envelope与provide之间为被动关系，故用过去分词作定语。故选B。
考点：考查非谓语动词作定语