求几个英语填空答案的解释?~~~~She____(be)illforthelastfewweeks.whenyougooutwalking,tellsomeonewhereyou____(plan)togoandwhenyou____(expect)toreturn.答案是wasareplanningexpect但是不太明白,尤其是

　　求几个英语填空答案的解释?~~~~

　　She____(be)illforthelastfewweeks.

　　whenyougooutwalking,tellsomeonewhereyou____(plan)togoandwhenyou____(expect)toreturn.

　　答案是wasareplanningexpect

　　但是不太明白,尤其是第一个,for后面加时间段应该是完成时啊,就算是过去,也应该是hadbeen啊?求解答