The reason___________he gave for not coming to your birthday party is ___________his mother was ill.
— Why do you look so worried? —My computer broke down and my essay ______ unfinished since.
Who will ______ your dog when you all go out for a holiday?
A man with a big camera in his hands stopped me and asked, “Excuse me! Is there a post office around ______ I can have these posters sent to my friends?”
—The frequent terrible coal mine accidents killed more than 1000 people in China last year.—_______.
sales of cars up by 30% last year, the traffic in Beijing has become increasingly terrible.