Those overseas students volunteer 10 hours each week in Paris ________ free food and accommodation.
Hangzhou is one of the most beautiful cities ___ I have ever visited.
___ lovely day they had!
I ___ I could fly to the moon by spaceship one day.
I don't know when he ___. But when he ___ back, I’ll let you know.
Mr. King, manager of a big department store, is about to pay a visit ___ Chian next month.