1) has been arguing for. .
2) suggests
3) is worried now? (Если интересна причина) / is worrying ( если просто спрашивают, чего она плаче. Без особой цели, как говорят из вежливости) хотя я предпочел бы 1 вариант.
4) has heard
5) The host has already allowed us. .
6) changes
7) explained
8) did you fail. . .
9) Is your brother moving the furniture now?