In the experiment we kept a watchful eye ________ the developments and recorded every detail

22—Boy, ____________　—It is, looks like spring is coming soon　—Yeh, It’ll just be a few more weeks

The victims of the accident demanded that the case ______ at once.

The government________the serious problem of juvenile delinquency.[ ]

I will miss my family when I go abroad for further study next year.—-Don’t worry. You can ________ them by email.