根据下面每句句意、汉语提示或英语解释，写出空白处所缺单词的正确形式，每空一词。
Don’t be_______ （害羞） when you speak English to foreign friends.
September is the ______ （九） month of a year．
Hurry up, we only have a few _______ （分钟）left.
In my __________（a personal idea, view or impression）, he is the best football player in the world today.
We are strongly against dropping litter ______ （here and there）.