1.I try to a few minutes every day to do exercises.
答案：set aside
set aside:留出、拿出.后面可以跟时间或金钱等.
我努力每天拿出几分钟来做练习.
2.Only when class began that he had left his book at home.
答案：did he realize
Only 修饰的状语放在句首的时候要用“部分主谓倒桩”（即把相应的助动词放在主语前面）
直到开始上课的时候他才意识到他的课本忘在家了.
3.The book is said into many languages.
答案：tanslating
答案错了（对此我有绝对把握）.正确答案应该是：to have been translated.
表示“据说过去发生过某事”的句型之一是：sth is said to have been done.
据说这本书已经被翻译成好几种语言.
4.He recommended that a special committee to look into the incident
答案：be set up
set up:成立（机构、组织等）
recommend表示建议,表示建议、命令、要求的动词后如果出现宾语从句要用动词原形或者“should+动词原形”
他建议成立一个专门委员会来调查此事.
5.It is in Qingdao you're going to pay a visit to this kind of washing machine ia produced.
答案；/；that
不知道空在哪里.无法判断答案是否正确.但可以看出是一个强调句.结构是：It is+被强调的内容+that+句子的其他部分.
大致的意思是：你将在青岛去参观生产这种洗衣机的工厂.