99.The chairman thought___________necessary to invite Professor Smith to speak at the meeting .
The schoolboys and schoolgirls are walking along the street, _____a small redcap .
When the injured _____ to the hospital , they came to .
The government’s efforts to cut the homework burden of primary and middle school students _____ mixed reactions(反应).
Nobody but the twins _____ some interest in the project till now.
Janet as well as the other young people who ____ sent abroad by the government ____ brought up in a small town.