—May I go and play with Dick this afternoon,Mum?—No,you can’t go out________your work is being done.
Many friends sent me e-mails to _________ me on the birth of my son.
The boy the teachers considered _________ was caught __________ in the exam, which surprised us very much.
------Does Shelly like shopping? -----Well, she would rather spend time __________ at home than __________in the street.
-----We didn’t find Smith attending the lecture. ------No one __________ him about __________ a lecture the following day.
The young woman rushed to the hospital ________ she heard the terrible news.