（ ） --How many boys? -- . A. Ten. B. I'm fine. C. Good.
改错。(把错误的选项写在括号内，并在横线上改正。)(6分)
Tom ________ his homework on Sundays. A．doesn't doB．doesn't C．isn't do
________ mother is a doctor. A．She B．He C．Her
My uncle is a teacher.He ________ me Chinese. A．teaches B．teach C．teaching
She is ________． A．a engineerB．engineer C．an engineer
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