Unless ________ to speak, you should remain silent at the conference.
#95045
A
invited
B
inviting
C
being invited
D
having invited
推荐题目
_____ into many languages , the book is popular with young people.
#93331
A
Having been translated
B
Having translated
C
To be translated
D
Been translated
____ people think that the hit movie Matrix I (《黑客帝国1》)is well worth ____. 
#96921
A
The number of; watching
B
A number of; watching
C
The number of; to watch
D
A number of; being watched