-- Sorry, sir. I made a mistake again.-- ________ Practice more and you will do better.
-You have got three dictionaries, don’t you ?- Yes, I bought one.______ two were presents from my parents.
My parents come from Hunan, but ____ of them likes hot food.
I don’t know when my father _____ back, but I’ll let you know when he ___back.
The children have six ______ classes every weekday.
We are not allowed ______ in our school.