【2015·福建】It was________of Michael to inform us of his delay in case we got worried.
-Do you have enough to ________the cost of your board at school?-Oh,yes,enough and to spare.
I want to sell the house,but ________I can't bear the thought of moving.
The population of this city,forty percent of which________,________20% in the last three years.
After the experiment the plant is ________ it was before.
Football games are really ________with not only the young but also the old.