根据语境和句意，从括号中选择一个可填入句子的正确选项，并将答案填写在答题卡上指定的位置。
The cook added salt into the soup but it still wasn’t_______ enough. (salt, salty)
The story book is interesting and it was______ by Mark Twain. (written, writing)
“What do people in Korea do when they meet _______the first time?” “They usually bow.” ( in, for)
Singapore has a night_______, you can watch many kinds of animals there.(zoo, party)
Every year, Guiyang attracts larger numbers of tourists, ______in summer.( especial, especially)