Loudspeakers were fixed in the hall so that everyone______an opportunity to hear the speechA.ought to have D.should haveought to 和shoud 有区别么

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Loudspeakerswerefixedinthehallsothateveryone______anopportunitytohearthespeechA.oughttohaveD.shouldh

Loudspeakers were fixed in the hall so that everyone______an opportunity to hear the speechA.ought to have D.should haveought to 和shoud 有区别么
Loudspeakers were fixed in the hall so that everyone______an opportunity to hear the speech
A.ought to have
D.should have
ought to 和shoud 有区别么

Loudspeakers were fixed in the hall so that everyone______an opportunity to hear the speechA.ought to have D.should haveought to 和shoud 有区别么
d 可以表示判断,即这样就应该能,.,.,.
a 本能,应该去做,一种职责,