look,what is norman doing ?he is--------his dinner a,hasing b,having c,have选哪个

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look,what is norman doing ?he is--------his dinner a,hasing b,having c,have选哪个
look,what is norman doing ?he is--------his dinner a,hasing b,having c,have选哪个

look,what is norman doing ?he is--------his dinner a,hasing b,having c,have选哪个
B
have的现在进行时