I’msorry,butthereisnosmokingon

----I’m sorry, but there is no smoking on this flight.
----Oh, I _____ that. Sorry, I won’t again.

A．don’t know

B．didn’t know

C．won’t know

D．haven’t known

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相关试题

—Where is our English teacher?
—She is in the classroom, _____ the exercises _________ the students have done at home.

A．explaining; /	B．explaining; for
C．explained; to	D．explained; from

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To get an education, _______.

A．working hard is very important	B．working hard is needed
C．one must work hard	D．it is needed to work hard

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Tom does speak Chinese well, but his reading and writing skills leave much _______.

A．to improve

B．to be improved

C．improving

D．improved

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That gas pipeline project, in July 2002 and in 2005, will be China’s longest gas pipeline in history.

A．starting; completing	B．started; to be completed
C．to start; completed	D．starting; completed

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We saw new houses wherever we went on our visit.

A．built

B．being built

C．building

D．to build

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