![](https://lstatic.shangxueba.com/sxbzda/h5/images/m_q_title.png)
[主观题]
Laura opened the envelope, (fold)______ the letter and began to read it carefully.
Laura opened the envelope, (fold)______ the letter and began to read it carefully.
![](https://lstatic.shangxueba.com/sxbzda/h5/images/tips_org.png)
Laura opened the envelope, (fold)______ the letter and began to read it carefully.
第2题
为了保护您的账号安全,请在“上学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!