根据提示填空(每空一词)
____ ____ (not, speak) with your mouth full of food and ____ (be) polite.
答案
Don’t,speak,be
知识点:祈使句

在祈使句中,其否定形式为Don’t +动词原形,此题是由and连接两个否定祈使句。所以完整表达为Don’t speak with your mouth full of food and be polite.

略
