SAT Practicee350ee3f-3300-4778-9186-a08909037ac4

Practice one SAT question at a time

Questions come from the Bluebook question bank. Made by Iskaa303 (Iskander Madikhan).

For decades after World War II, the women who had worked for the US military as wartime codebreakers blank their vital efforts a secret.

Which choice completes the text so that it conforms to the conventions of Standard English?