Ответ:
1) where are you going? a
2) what is he doing? e
3) what are they to listening? d
4) what is she studying? g
5) who are you to writing? b
6) what are they eating? f
Five hundred and 9 million, six hundred thousand kilometres
<span>1) I understand this rule very well.
2) He told me about this incident yesterday at the institute.
3) </span><span>My brother </span><span><span> sent me t</span>hese magazines from St. Petersburg.</span>