--What do you think made Celia so happy?--______ a prize in the recent competition.

______ left before the deadline, it doesn’t seem likely that John will finish the job.

 –Come on, please give me some ideas about the project.--- Sorry. With so much work _________my mind, I almost break down.

    sales of cars up by 30% last year, the traffic in Beijing has become increasingly terrible.

 Tom received an invitation to dinner, and with his work ____, he gladly accepted it.