acher talked with Jack, _______ problems waspoor study habits

te a lot of novels, none of _____ wastranslated into a foreign languages.

He didn’t go by bike with me.That’s ________ there was something wrong with his bike.

Since last year, the global economic slowdown ________ in many countriesIt is expected that the world economy will not recover until the end of 2010

They ______ on the program for almost one week before I joined them, but still no good results _______ so far