根据中文意思完成句子。我学英语已经有5年了 I_________________ English for five years.
在保护动物方面还有很长的路要走。
This is still _______________ to go to save the animals.他妈妈生病了，他得在家照顾她。
His mother is ill, he has to ____________ her mother at home 我们究竟能做什么？ What ___________________ can we do?
他在世界各地举办过音乐会。 He has given concerts ________________ the world.
I won't let you in （除非） you can provide a proper ID．
What's in the box？ Let me （猜）． Is it a book？
China's fight against COVID﹣19 gives the world （宝贵的） experience．
The hotel provides delicious food and comfortable rooms， but still some customers complain about its （服务）．
A stranger （主动提出） to give her a ride on the street， but she refused politely．