Several hours later, with the help of the police, the students managed to escape from the dangerous place, _______.

Only when I left my parents for Italy _____ how much I loved them.[ ]

It should be emphasized that our technology has great potentials ________ food development in China.

Many students’ failures________their carelessness in every examination.[ ]

She told me that it had been worrying her much ________ her hair was turning gray.