The chairman thought _____ necessary to invite Professor Smith to speak at the meeting.
We could hardly believe what she says because she is ________ changing her mind.
Unemployment arises partly from overpopulation and if fines can’t keep the rich from having more than one child, we should say that the regulation is not ________.
We need to spend more time researching these suggestions so that we can make a(n) _______ choice.
In Britain today women __________ 44% of the workforce and nearly half the mothers with children are in paid work.
An interesting suggestion for measuring the atmosphere around Mars has been _________, thus leading a heated discussion among the scientists.