Classes______ ,the students left for home without delay.选项:a、were overb、 being overc、 are over d、 over

classes______.let's go to the classroom.a.begins b.begin c.beginning Classes______ ,the students left for home without delay.选项:a、were overb、 being overc、 are over d、 over We have P.E classes______(介词）Monday morning. Classes______ ,the students left for home without delay.A.were over B.being over C.are over D.over为什么选B呢?书上同样有个例子说是being可以省略的.例：The football match (being）over,crowds of people poured out into the street. the 1840s; 1840's; 1840s; the 1840s' the dentist's ,the lawyer's是什么意思? What's the date that's the What's the fuck? what's the fucking what's the time_____london? S(),the door opened match the teacher's in the cat,s what's the what's the what's the time woat`s the matter