他的父母出差已有半年了。他觉得自己年龄够大了，可以照顾自己。每周他通过邮件和父母保持联系。粮食快吃光了，他不知道该怎么办。这份经历对他的将来会有很大的影响。
He went （野营） with us and taught us how to put up a tent．
Mr． Wu said he had （很少）seen a child with so much talent．
Everyone should （行动）now to separate rubbish into different groups．
It is important for us （学会如何表达）our sincere thanks to others．
Suddenly，Lucy saw a policeman near the bus station．"I may ask him for help．"She _ （自言自语）．
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