they have been collecting stamps for 10 years
they have been collecting stamps for 10 years
We have been collecting stamps for five years .
We have been collecting stamps for five years.(同义句转换)
I have been collecting stamps _______i was nine years old
1.My uncle has been collecting stamps for four years.
They have been collecting shells for there years.(改为同义句)
I have been collecting _____(snowy) globes for seven years.
They have been working ____ a teacher for 10 years.
they have been married for fifty years
I have been collecting shells for three years.和 I have colle
Have you been collecting shells for five years?做否定句
they said they have been married for ten years