The first textbooks ______ for teaching English as a foreign language came out in the 16th             century. 
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A
to be written
B
written
C
being written
D
having written
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The colorful design _______ sixty candles and a flag will appear on the People Square on October 1.
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A
consists of
B
consisted of
C
to consist of
D
consisting of
---Why are the four students so happy? ---_______ in the science competition, they are awarded prize money totaling $20,000.
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A
Judged the best       
B
Judging the best  
C
To be judged the best     
D
Having judged the best