The girl in the photo was smiling sweetly, ________.
Scientists say it may be five or six years _______ it is possible to test this medicine on human patients.
It was some time _______ we realized the truth.
Roses need special care _______ they can live through winter.
This photo of mine was taken _______ stood the famous Eastern Bright Pearl in Shanghai.
You should made it a rule to leave things _______ you can find them again.