is the first important factor for news, so it’s the responsibility for journalists to ensure all the information in their reports comes from ________ sources.

8It is obvious that she ________, for she looks much slimmer than she did last year

They _________ the habit of visiting old friends,_________ I think is great.

I don’t think it is teachers who ______ for giving students too much pressure

12Most American cities are relatively small _____ population when compared with Shanghai and Beijing