— What do you think of this one?— It looks nice. But I ________ why you choose (选择) this one for me.
____________ you study , _______________ grades you’ll get.
The box is ________ heavy ________ I can’t lift it.
She said she______the new school rules already.
Everyone is supposed ________ a seat belt in the car.
Paul doesn’t have to be made ________. He always works hard.