—Would you like tea or coffee?—_________ is OK．I really don't mind．

＿＿＿＿four years since I joined the army. 

I wanted to buy a comic book , but there was      in the bookshop.

．—Do you think_____     worthwhile to go all the way to Los Angles to buy that computer?—Well ,I’m going to visit some relatives, too.  

I would rather buy a house in the suburb than ____ in the city.