Those overseas students volunteer 10 hours each week in Paris ______ free food and accommodation[ ]

It ‘s our duty to_________people_________too many trees.

Take a map of New York with you while traveling ________ you have a guide or know the city well.

He doesn’t like making friends with other people, does he—________. He always stays at home and never says anything about himself.

Next winter, _________I’ll stay in Jilin City, will surely be another exciting holiday [ ]