Nephrolithotomy is the term for___.

I am sorry, but this dress on the model is not for___. A: show B: money C: sale D: buy

Tomorrow I'm leaving for Beijing and I'll stay there for___. A: sometimes B: some time C: sometime D: some times

In responses to invitation letters, the following are usually included except for___. A: restating the main content of the invitation B: expressing inquires for the conference submission deadline C: expressing acceptance or declination of the invitation D: expressing good wishes for the conference