单项选择题


A．had been working
B．have been working
C．worked
D．have worked
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单项选择题
A．knowB．knewC．have knownD．had known
A．know
B．knew
C．have known
D．had known
单项选择题
A．what he is likeB．what is he likeC．how he isD．how is he
A．what he is like
B．what is he like
C．how he is
D．how is he
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