根据句子意思，在空格上填写所缺的单词I learn English
The police warn the drivers to drive slowly on days because it is dangerous．（snow）
Mr．Green is so serious that he always thinks before making a decision．（careful）
Helping others is helping ，so we should try our best to help those in need．（we）
Tu Youyou is one of the Nobel Prize in 2015．We're proud of her．（win）
John is not good at ，but he would like to have a try．（sing）
粤公网安备 44130202000953号