单项选择题
A．The woman remains a total mystery to him. B．The woman is still trying to finish her work. C．He has devoted a whole month to his research. D．He didn’t expect to complete his work so soon.
A.assume B.confidential C.disagree D.formula E.forthcoming F.illustrating G.mysteriously H.observe I.optimistic J.package K.radically L.reality M.separately N.spoiling O.understimate
A．America should open its borders to immigrants from different countries B．Imigrants have contributed greatly to the welfare of American people C．Unrestriced immigration will undermine the American welfare state D．There is no point building a wall around the American welfare state