Rewrite (using might or might not) 1.It's possible they've lost our address. 2.There is a possibility that they did't get our invitation. 3.Perhaps they have forgotten where they live. 4.It's possible their car broken down. 5.Perhaps they have been held up by a traciffic jam in the center. 6.Or maybe someone telephoned them when they were leaving. 7.perhaps they've lost thier way. 8.Maybe have gone into the wrong way. 9.Perhaps they have been stopped and robbed by the burglars.

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