The murderer in the murder case is a dark—haired white woman who is __________ forty years old.
The factory was built in a secret place, around ______ high mountains.
Yesterday we visited a modern hospital, around _______ some fruit shops.
He had thousands of students, many of ______ gained great success in their own field.
He asked a lot of questions, none of ______ was easy to answer.
He asked a lot of questions, and none of ______ was easy to answer.