The book is about the future of _____（科技）.

The book is about the future of _____（科技）.
It will _g____ warm at the North Pole in the future.
We can _s____ some flowers to our mums on Mother's Day.
Our teachers don't write on a blackboard with _c____.
_S____ is the first season of the year.
The children need some _p_____,because they want to draw pictures.