50．A．usual B．unusual C．informal D．formal
49．A．unless B．if C．a(chǎn)s long as D．since
48．A．lives B．customs C．parties D．beliefs
47．A．OK B．sad C．a(chǎn)ngry D．well
46．A．a(chǎn)m feeling B．feel C．felt D．was felt
45．A．worse B．luckier C．better D．easier
44．A．look B．notice C．watch D．care
43．A．changing B．buying C．washing D．making
42．A．mean B．think C．decide D．suggest
41．A．a(chǎn)fraid B．happy C．bad D．lucky
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