Tina _____ have known the truth, or she would have told us.

I heard that you really had a wonderful time at John's birthday party, _____?

Thereweremanymorepeoplewhogotinjuredinthebigfirethan_______.

AsurveywascarriedoutonthedeathrateofthosewhowereinfectedbySARS,________weresurprising.

In recent years much more emphasis has been put______ developing the students productive skills.