@sangkancilguru @BettyB2007 @EricTopol Presumably they tested positive before. Just do the same thing. Also, in this situation no one is forcing them to do it (otherwise it would have to be a third party or proctored test), so if you care enough to bother at all, can bother to do it right.
@sangkancilguru @BettyB2007 @EricTopol 大概他们之前测试过阳性。做同样的事情。此外，在这种情况下，没有人强迫他们这样做（否则它必须是第三方或有监考的测试），所以如果你足够关心打扰，可以费心去做。