1.Do you want to buy a new ruler?
2.Can you give some food to me?(这里考查的应该是give的用法吧!give sb sth=give sth to sb)
3.Thank you for inviting me.
4.There is some mil,snack,apples and sweets on the table .(mil 是不可数名词,所以要用单数）
5.What do you think of the chocolate cake?