_______he lives in a large flat and owns much money, he doesn’t seem as happy as before．
A．BeforeB．WhetherC．UnlessD．While
D
連詞辨析。A．在……以前B．是否；不論 C．除非   D．當(dāng)……時(shí)候；雖然；然而。句意：雖然他住在一所大公寓里并且有很多錢(qián)，但是他好像不如以前那么幸福了。故選D。
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