Which sentence is right? A.His father has gone to HongKong twice. B.Where have you been these days? C.I don't know what the matter was wrong with him. D.Kate's brother has joined the army since three months. 为什么?
£ A His father has been to HongKong twice. ĸȥΡ C.I don't know what was wrong with him. Ҳ֪ôˡ D.Kate's brother has been a mumber of the army since three months ago. صĵܵܳΪѾˡ