16. As schools are closed, students _______________ to school. Instead, they take
classes online.
(A)don’t ought to go
(B)oughtn’t to go
(C)ought to not go
(D)ought not go
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統計: A(25), B(70), C(31), D(49), E(0) #2942253
統計: A(25), B(70), C(31), D(49), E(0) #2942253