Sarahknewnothingaboutithersist

Sarah knew nothing about it ____________ her sister told her.
A. if B. until C. since

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— Is SIEMENS 　　　 European company?
— Yes. Its head office is in 　　　 Germany.

A．a; the	B．an; the
C．a; /	D．an; /

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— Mum, do you mind my listening to music for a while?
— 　　　. But please listen to it with your earphone.

A．Yes, please	B．No, thank you
C．Not at all	D．Yes, I do

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In our life, we can work hard on one task 　　　, and then another. In this way, all your dreams can be realized.

A．at a time	B．on time
C．at the time	D．all the time

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— Don’t keep water running when you wash hands.
— ________．

A．I hope so	B．I’m afraid not
C．Sorry, I won’t	D．It’s nothing

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—Could you tell me_______?
—Perhaps on March 8.

A．when will MH370 be lost	B．where MH370 was lost.
C．when MH370 was lost.	D．where was MH370 lost.

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