His proposal is so idealistic that there are many difficulties in putting it into practice.
His health is ______improving. I'm sure he will come back to work soon.
—Did the naughty boy break the glass by chance? —No, ______.
They______ with each other for two years before they got married.
It has something to do with the part electricity ______ in our life.
After graduation he took all his works to London ______ get a good job there.