The conclusion _____ the police came to _____ the boss was as much to blame as anyone else for the great fire didn’t satisfy everyone.

His conclusion, ______ on careful research, was acceptable.

A.to base????????????? B.to be based????????????? C.basing????????????? D.based

The conclusion _____ the police came to _____ the boss was as much to blame as anyone else for the great fire didn’t satisfy everyone.

A．where / that       B．which / it          C．that / when        D．that / that

.His conclusion, ______ on careful research, was acceptable.

The __________ conclusion is not a set one. It still needs further testing.

  A. tentative    B. basic     C. bare    D. systematic