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．There wasB．There isC．It'sD．It was
A．There was
B．There is
C．It's
D．It was
单项选择题
A．mend me the watchB．mend me my watchC．have my watch mendedD．have mended my watch
A．mend me the watch
B．mend me my watch
C．have my watch mended
D．have mended my watch
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