by a policeman, the children crossed the street safely.

He told us whether           a meeting was still under discussion.

They considered ______ a computer, which was considered ________ a great help in their work.

He sent me an e-mail, ________ to get further information.  

I really appreciate ________ to relax with you on this nice island.  

Generally speaking, prices of daily goods ______ through the Internet are lower than store prices．

The ability ________ an idea is as important as the idea itself.

The setting sun was reflected on the river, ________ everything along the banks ________ all the more beautiful.

Is it normal that in September hotels near universities are overcrowded, _____ many parents from a distance nowhere to stay but to sleep on the playground ?

I ___________ that work last week, but I changed my mind.