centre ，important ，polite ，office，thin
（1）We should speak to our parents

politely

politely

．
（2）He takes more exercise and he is much

thinner

thinner

than before．
（3）The Greens live in the

central

central

area of New York City．
（4）English and French are the

official

official

languages in Canada．
（5）What's the

importance

importance

of learning English well？