The best way to explore _______ countryside is on _______foot.
_______these coins are of different shapes, sizes and colors, they all date back to a long, long time ago.
When _______ about their opinion of the effect of modern equipment on their performance of tasks, many young people gave a positive response.
-----Have you heard the amazing news? -----But it _______ be true. Anyone with common sense won’t believe it.
All 5 children of the Blacks, _______ are now working abroad, will come back for their parents’ 50th wedding anniversary.
We live in a society _______ there is a great deal of debate about competition.