----- Where is Jack?.-----He______ be in the reading room .I saw him just now. A.need B.can.
-----WhereisJack?.-----He______beinthereadingroom.Isawhimjustnow.A.needB.canC.mustD.w...
----- Where is Jack?.-----He______ be in the reading room .I saw him just now. A.need B.can C.must D.would
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