单项选择题

Which of the following sentences is INCORRECT

A．Physics is an important school subject.
B．The Niagara Falls is in North America.
C．The United States borders Canada.
D．Mumps is a kind of infectious disease.

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单项选择题

Which of the following tag questions is INCORRECT

A．Carry this parcel for me, will you
B．Nobody wants to go there, does he
C．Few people know him, don’t they
D．Everything is ready, isn’t it

单项选择题

Please pardon ________ you.

A．my disturbing
B．disturbing me
C．to disturb
D．that I disturb