根据句意及首字母提示，将单词补充完整。
He fell off the bike yesterday．But ________(幸运的是)，he didn’t get injured．
It’s difficult to make a ________(预测)about the future．
They have so many lessons to take these days．They don’t get home u________ 7 pm．
If you become a professional athlete, you’ll be able to m________ a living doing something you love．
My father will help me to o ________ my birthday party．
Are you for or a________ the idea?
The t month of the year is December．
We are working hard to make our country s and rich．
To the doctors，the most important thing is to s lives．
What's your f subject？I like maths best．