The rabbit puts her sign _______ front of the hospital .A.in B.on C.of
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 do B．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 engineer B．engineer C．an engineer
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