题目内容：

阅读下面材料，在空白处填入适当的内容或括号内单词的适当形式（每空最多填三个单词）

Wang peng sat in his empty restaurant，1.(feel ) very 2.(frustrate)，because all his regular customers  had gone to eat in Yonghui’s newly –opened restaurant．He looked at his menu: mutton，beef，bacon and  sugary cola---- nothing could be 3. (good) than these! He wondered why．4.(curious ) drove him 5. (follow) one of his friends into Yonghui’s restaurant．He was amazed 6.  the menu there: rice raw vegetables7. (serve) in vinegar，fruit and water．In order to win his customers back，he went to the library to do some research，8. showed Yonghui’s menu didn’t give enough energy-giving food．In fact，there was  a weakness in his own menu as well．Perhaps with9.discount and a new sign he could win his customers back．

The competition between the two restaurants was 10.!