___ you lose the paper document, sign in wwwSina.com, __ you might download all you need

Look! There is a rabbit with a pig in the TV show.—It’s so interesting.

With the support of the Chinese government, many patients in poor areas can _ togo to hospital.

It was _________he came back from Africa that year_________he met the girl he would like to marry.

The report advocated that all buildings with smoke detectors. [ ]