doesyour school have the parents’ meeting— Twice a year.

Obviously the measures taken by the local government have_______ the solution to drinking water problems in this region.

－It’s one of the things in the world to stay with friends.－I agree. It always makes us relaxed.

. Research findings show we spend about two hours dreaming every night, no matter what we ____ have done during the day.

下列各句中，加线的成语使用恰当的一项是（ ）