18. ---- Are you free after school? ---- Sorry. I’ve planned to treat a friend of mine to dinner _______for his help.
I’ll help you _____.
There is _____ rain in summer in the south this year.
Let us ______ out for______, _______?
More jobs ______ the school-leavers in the future.
To get to the top of the mountain, we had to _______.