根据下列句子及所给汉语注释，写出空缺处各单词的正确形式，每空只写一词。

1. Ningbo is a beautiful _______ (城市) with a long history.                  

2. Uncle Wang usually goes _______ (游泳) in the river nearby on Sundays.     

3. He can't see the blackboard clearly, so he needs a pair of _______ (眼镜).

4. Sorry, I can't follow you. Would you please speak more _______ (缓慢地)? 

5. David wanted to buy an iPhone 4, but his father didn't _______ (同意).   

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