Unscramble the sentences.

if Dbe DDinosaurs, D Dcomet Dmight Dbut Dthey Dalive Dextinct, D Dmissed Dare Dthe Dhad. D

If Ibuildings Ihappened Isome, I Ian Ifall Iearthquake Idown Imight. I

down Shappened Searthquake SSome Sif San Smight Sbuildings Sfall. S

if Mnot Mout Mplants Mgrow MMany Mwould Mbees Mdied. M

had Iwould Ihumans Ihave, I Ieaten Isurvived Ithey Iall Ithe IIf Idinosaurs. I