【推荐1】If you travel ________ the customs are really different from your own, please do as the Romans do.（用适当的词填空）

【推荐2】Many love to find out _______ the pictures were originally taken. (用适当的词填空)

【推荐3】Soon children had many friends in the camp, ________ they shared food, stories and projects.（用适当的词填空）

【推荐1】When we come across such factual differences, we shouldn’t rush to the conclusion ________ one of the news reports gives false information. （用适当的词填空）

【推荐2】John Snow put forward a suggestion ________ people should not be exposed to polluted water. (用适当的词填空)

【推荐3】阅读下面句子，在空白处填入适当的内容（1个单词）或括号内单词的正确形式（每空至多3词）。
1. _______ comes from abroad must have a medical test for new coronavirus pneumonia.
2. You haven't answered my question _______ I can attend the meeting tonight.
3. Evidence has been found through years of study _______ children's early sleeping problem is likely to continue when they grow up.
4. Doctors usually write exact instructions _______ the medicine is taken.
5. My washing machine _______（repair）this week，so I have to wash my clothes by hand.
6. He is known _______（spend）18 years fighting for slaves.
7. In the 1950s in the USA，most families had just one phone at home，and wireless phones _______（not invent）yet.
8. The day will come _______ we’ll win the final victory.
9. _______ everyone hoped，Mary has won the first prize.
10. _______（expose）to sunlight for too much time will do harm to one's skin.