_______________ useful message he got from his mobilephone this morning!

The chairman asked me to ______ the report, because he didn’t want to speak for too long at this meeting. [ ]

(2010·新课标全国)Mary made coffee ________ her guests were finishing their meal

It isn’t so much whether he works hard; the question is whether he works _____

Look! The wall is so dirty. It _______. [ ]