Since David ______ downloaded a virus into his computer, he can not open the file now.

It doesn’t make any difference how we get there because we’re going to be late________.

—_____of Hangzhou has your brother covered since he came here?—About half of it, I guess

 (2013·江西高考)What a terrible experience！________， you're safe now —that's the main thing.

Last year John earned________his brother did，who has a better position in a bigger company.