Complete the sentenced with the given words in their proper forms（用括号中所给单词的适当形式完成下列句子）

【1】San Francisco is full of ________ in summer.（tour）

【2】Detective novels used to hold a special ________ for me.（attract）

【3】The ________ children went to bed quickly.（exhaust）

【4】Heath row, London's international airport, is the ________ airport in Britain.（busy）

【5】Nowadays, even many middle school students can't look after ________.（they）

【6】We walked on down to the Bund, the old part of the city with lots of ________ style buildings.（Europe）

【7】The more ________ you do your homework, the fewer mistakes you'll make.（care）

【8】My brother said goodbye to me and ________ in the darkness.（appear）