why is Friday the 13th unlucky要查的...

why is Friday the 13th unlucky要查的... the day after friday is -------------- Is this factory ___some foreign friends visited last Friday?A that B where C the one 该选哪个?why? Friday is the( )day of a weekAsixthBlastCfifthDfirst the meeting is s______ for Friday afternoon. Friday is the ( ) day of a week. The course is from Monday to Friday. Why the answer is the reson.why..is lonely friday when the sky is graylonely friday when the sky is gray the time between Friday and Monday is the weekend. Today is Friday.What day will it be 100 days from now?Why? The store is open daily ( )Monday to Friday.(for,from) She is (w ) the Friday night (w ) report on television. The day comes befre Friday.What day is it today? “lonely friday when the sky is gray”请问这是什么意思? he is going to the movies on Friday. Why is the river rich?