YOU SAID:

You have been acting awfully suspicious

INTO JAPANESE

あなたは非常に不審な行動をとってきました

BACK INTO ENGLISH

you've been acting very suspicious

INTO JAPANESE

あなたは非常に疑わしい行動をとってきました

BACK INTO ENGLISH

you have acted very suspiciously

INTO JAPANESE

あなたは非常に疑わしい行動をとった

BACK INTO ENGLISH

you acted very suspiciously

INTO JAPANESE

あなたは非常に疑わしい行動をした

BACK INTO ENGLISH

you acted very suspiciously