. Many new workers _______ and in six month they will be sent to build a new railway.
The police have offered a large _______ for information leading to the robber’s arrest.
Your essay is fairly good and yet it leaves something ______.
Susan was expecting her favourite singers, but to her disappointment, _______ appeared.
China’s economic development has made ______ rapid progress in the past 10 years, and young people have made ______ great contribution to this progress.
—May I open the window to let in some fresh air ? —_____.