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—Have you ever seen a whale alive? ----Yes,I’ve seen______.
A that B it C such D one
---- Have you ever seen a whale alive? ---- Yes, I’ve seen ____.
A. that B. it C. such D. one
—Have you ever seen a whale alive?
—Yes. I’ve seen ________.
[ ]
—— Have you ever seen a whale alive?
—— Yes, I’ve seen ＿＿＿.
A.that B.it C.such D.one