Question

Their house . . . be haunted ; they have lived there for several years and they have never seen anything unusual.

can’t
may
mustn’t
must

Answer 1

Ответ:

Their house can't be haunted ; they have lived there for several years and they have never seen anything unusual.

Answer 2

Ответ:

can't

Объяснение:

Their house cant be haunted.