The managing director took the _____ for the accident, although it was not really his fault.
A (n) __________ of scientists are looking into the matter and have realized a certain __________ of time is to be spent.
Your face seems __________. I haven't met you here in the old days.
Can you __________ behind after the others have gone and help me clear up?
Duncan, __________ NBA star, is one of __________ few basketball players who are very popular with Chinese fans.
The number of students in our school __________ about 30, 000 and __________ them study hard.