Sentence examples for this must have from inspiring English sources

This must have required enormous restraint.

This must have been a common reaction.

This must have seemed shrewd politically.

This must have been 1983 or 1984.

This must have been some mission statement.

This must have been in 2009.

This must have driven him crazy.

All this must have dented his morale.

This must have come from Tesco's system".

This must have been a wonderful place.

This must have hampered the boss's flexibility.