No. 7 High Senior 3 students are lucky to enjoy a ______ long winter vacation, compared with those of other schools, some of whom have to stay at school even during the Spring Festival.
With the help of high technology, many new substances(物质)______in the past years.
______ is know to us all, good friends ______ happiness and value to our life.
Letterboxes are much more _______ in the UK than in the US, where most people have a mailbox instead.
I’m certain David’s told you his business trouble. ________, it’s no secret that he owes a lot of money to the bank..
---- Will Joe attend the party? ----- If his wife won’t go to the party,_________.