日本語をクリックすると英文が表示されます。まずは自分で英語にしてから答え合わせを。
That boy has been running for over an hour.
They have been looking for an apartment for months.
I have been reading this book for two hours.
He has been waiting for his girlfriend for hours.
She has been playing the piano for more than three hours.
Scientists have been trying to solve the difficult problem for centuries.
How long have you been watching TV?
She thought that her brother was watching TV.
Have they been learning Japanese for a long time?
I hope that you will come again.
It has been raining since this morning.
She believes that he will come back some day.