1.why did you buy the jacket---you didn't like it?

1.why did you buy the jacket___you didn't like it?A.since B.that C.which D./2.i___i would win the first prize of the competition.A.wish B.hope C.think D.believe3.Tom hasn't phoned us for a long time what do you suppose___to him.A.was happening B.to happen C.has happened D.happened麻烦帮选一下,再帮分析一下,