(2013·高考福建卷)________ basic first­aid techniques will help you respond quickly to emergencies.
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A
Known
B
Having known
C
Knowing
D
Being known
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 Please don’t forget him. He is one of _______.
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A
those invited
B
invited those
C
those inviting
D
inviting those
The play________ next month aims mainly to reflect the local culture. 
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A
produced
B
being produced
C
to be produced
D
having been produced