He ____ writing the paper now. He hadn’t written a single word when I left him ten minutes ago.
A.shouldn’t be | B.can’t have finished | C.can’t be | D.mustn’t have finished |
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He ____ writing the paper now. He hadn’t written a single word when I left him ten minutes ago.
A.shouldn’t be | B.can’t have finished | C.can’t be | D.mustn’t have finished |