作文 – No.1
（＊現在完了進行形以外の問題も含まれています。）
I have been studying history since this morning.
My sister has been cleaning her room for an hour.
My aunt has lived in Kyoto since 2020.
Takeshi has been using this computer since this afternoon.
We have been playing soccer since 3 p.m.
How long has his mother been cooking?
It has been raining for three days.
I have known him for a long time.
She has been reading books(a book) for three hours.
He has been waiting for the bus since 11 a.m.