The twins had been away for such a long time that many people in the village thought they ______.A.ought to have diedB.should have diedC.must have diedD.could have died-湖北继续教育网网校

[单选题]

The twins had been away for such a long time that many people in the village thought they ______.

A.ought to have died
B.should have died
C.must have died
D.could have died