The usage is correct, but duplicity is what makes a good spy, not a bad one.
Duplicity basically means deceitfulness, and usually a spy must be deceptive and deceitful in order to be a good spy. For it to be a correct use of the word, change it to:
She was a very good spy because she acted with such duplicity.
I interviewed the witness for over an hour, and I didn't sense any duplicity in his statements.
Mark Copani is Jewish. He only acted as a Muslim for the WWE because they thought it would be good for T.V.
Because like many good shows it is interesting and exciting, and is both well-acted and well-directed.
Because Pharaoh Khufu decided to move the royal necropolis [cemetery or burial site] to the Giza Plateau and because of the bedrock acted as good foundations.
yes because it is not a human
Mark Copani is Jewish. He only acted as a Muslim for the WWE because they thought it would be good for T.V.
Actually Andromon is good. The first time they met him and he acted bad was just because he had a black gear. The second season satrted with him being bad but that was because of the dark ring.
No katrina kaif has never acted in tamil movies. She is a good actor and a good person. Many fans love the way she is.
Yes, it is grammatically correct because both she and i are subject pronouns. However, it is customary to say "You and she are good friends" rather than "She and you." In general, the order is (you) (he/she/they/it) (I/we).
A correct or good hypothesis includes if then and because. A hypothesis must be a possible answer and must be testable
The colonists did not have good water available because it was usually contaminated. Tea was important because the colonists would heat the water up and tea acted as flavoring.
I have to say both is good because the book has more details and it's nice to see it acted out on screen.