Good friends should always share each other’s ______.（happy）
We saw the ______in blue run out of the bank quickly just now. (rob)
It would be______ to live on the Mars (火星) nowadays. (possible)
There are all kinds of ______ after class in our class. (activity)
If you exercise ______ every day, you will be stronger and stronger. (regular)
We feel______ with air-conditioned rooms in summer or winter. (comfortably)
The students from our school make leaf cards______ to tell us to love the Earth. (they)
It is very______ that so many young people go abroad for further study. (surprise)