单项选择题A．had been workingB．have been workingC．workedD．have worked

单项选择题A．There wasB．There isC．It'sD．It was

单项选择题A．mend me the watchB．mend me my watchC．have my watch mendedD．have mended my watch

单项选择题A．shoutingB．shoutedC．was shoutingD．be shouting

单项选择题A．didn't meetB．haven't metC．didn't knowD．haven' t known