Bcause she has been laughed at by her classmates句中为什么要跟上at?

Bcause she has been laughed at by her classmates句中为什么要跟上at? Where has she been? She has been hopeless是什么意思? she has been heard of 翻译:She has never been there,has she? she has been to beijing (twice)提问 she has not been around this week She has been working for 20 hours She has been to Xi'an b( ). Perhaps she has been in place then? She has been collecting stamps谢谢了 是how long has she been learning…还是how long has been she learning… She has been collecting stampsл!She has been collecting stamps谢! She has been writing poems since her childhool.(改为复合句) She has been writing poems since___ Not only has she been to America,but also she has been to Japan中为什么用has she she has been smart till she fill in she has been to Japan,hasn't she She has been swimming s----------- she was five years oid.