Why can't email users depend fully on automated filters?
举一反三
- Why can’t email users depend fully on automated filters? Automated filters will never catch _________________,since spammers will continue to work hard in order to get their messages through.
- Automated filters can catch all kinds of spam.
- Why can't the man leave on Thursday?
- Why can’t Jennifer succeed in the interview?
- A: How long can you stay here ?B: I don't know. That-----(depend)