Prince William took a visit to the Forbidden City on Feb.28, ______ emperors once lived.
She __________ an old friend of hers yesterday while she was shopping at the department store.
All the photographs in this book,__________ stated otherwise, date from the 1950s.
It is believed that if an event is __________,it will surely __________ the readers.
Readers were pleased __________ that a scientist could write about his research in a way __________ ordinary people could understand.
-Coach, can I continue with the training?-Sorry, you can't __________ you haven't recovered from the knee injury.