Make a tentative guess _____ Peking Man _____ have done and used thousands of years ago.
A.that; may | B.that; must | C.what; may | D.what; should |
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Make a tentative guess _____ Peking Man _____ have done and used thousands of years ago.
A.that; may | B.that; must | C.what; may | D.what; should |