优题课 - 聚名师,上好课(www.youtike.com)
  首页 / 试题 / 初中英语 / 试题详细
  • 科目:英语
  • 题型:单选题
  • 难度:较易
  • 人气:644

He has been collecting coins _______ he was seven years old.

A.because B.while C.when D.since
登录免费查看答案和解析

Hehasbeencollectingcoinshewass