Food safety is important. Rules to stop people from food pollution.
_______he is only 8 years old , he knows more about science than his father .
—Where’s your mother ? --She has gone shopping with my aunt . She’ll be back ________.
Tina_________wait _________ see her parents .
---Where is Zhang Ming? ---Oh, don’t you know he to Beijing to see his parents and he’ll be back tomorrow. A. has gone B. has been C. had gone
-- It’s very hot outside. ---Why you stay at home? A. not B. not to C. don’t