BOb has been collecting kites__?
Mary has been collecting 300 stamps.
Tom has been collecting stamps since
She has been collecting stampsл!
Has Bob been to this town before?
has watches collecting grandfather young he his been old sin
1.My uncle has been collecting stamps for four years.
帮我翻译下~She has been collecting
英语翻译急How long have you been collecting there kites,Bob?Since
一个英语问题,请详细解答.He has been collecting kites since he was ten y
The old man has been collecting wine bottles for five years.
She has been collecting wine bottles for two years.改为一般过去时
He has been collecting some sand from many places.是什么时态?是现在完