根据句意及首字母提示,把句子所缺单词补充完整。
(1)The months of winter usually are N ________,D _________ and J _____.
(2)Shanghai is in the e _______ of China.
(3)Teachers' Day is on the t _______ of S _______.
(4)The ball is 200 yuan. It is d _______.
(5)This plane f ______ to Guangzhou every day.
(6)Beijing is a b ______ city.
(7)The box is h _____. I can't carry it.