为什么说She denied having seen these necklaces 而不说She denied has

为什么说She denied having seen these necklaces 而不说She denied has He denied ___ these watches before.A.to see.B.seen.C.seeing. He denied ___ these watches before. A.to see. B.seen. C.seei 6小时,作文改错,However,although she is a good mother,she denied fa she has ever seen. Permission denied access denied she has't seen his family___three years ago.中为什么填since而不填bef 为什么不说he has gone 而说he is gone She has a notebook干吗不说She has one notebook 为什么要说how well she sings!而不说how good she sings! 绯闻少女中serena说she loves you,为什么不说she love you