I'm sorry I didn't understand you correctly.
I'm sorry I misunderstood you.
After Apollo 13, all the air filters in space missions can be changed freely between eachother
After Apollo 13, all the air filters in space missions are interchangeable
She _______ (work) here for five years.
She has been working here for five years.
I ______(work) all day, so I didn't want to go out..
I had been working all day, so I didn't want to go out..
After they _______(eat) the shellfish, they began to feel sick.
After they had eaten the shellfish, they began to feel sick.
This thing is not going to work unless we work well together
This thing is not going to work unless we cooperate
Rock star Pryce Weathers has just released his biography, written by himself
Rock star Pryce Weathers has just released his autobiography
We _________ (live) in London for six months.
We've been living in London for six months.
They ______ (live) in Beijing for three years when he lost his job.
They had been living in Beijing for three years when he lost his job.
He _____ (be) a teacher
He has been a teacher
Your behavior of repelling people will still cause you a lot of grief
Your anti-social behavior will still cause you a lot of grief
I'm not very optmistic. I'm more than sufficiently qualified for the positio, and my age could be something that will count against me
I'm not very optimistic. I'm overqualified for the position, and my age could be a disadvantage
It _____(rain) the pavement is wet.
It has been raining the pavement is wet.
We ________ (eat) all day, so we felt a bit ill.
We had been eating all day, so we felt a bit ill.
The garden was dead because it ________(be) dry all summer
The garden was dead because it had been dry all summer
You're going to need a very small surgery to correct this problem
You're going to need a micro-surgery to correct this problem
Like the mythological phoenix in their band logo, the Stone Wizards seem to be reborn after the return of their original lead singer
He __________ (not/play) football for five years.
He hasn't been playing football for five years.
We ______ (go) out for three years when we got married.
We had been going out for three years when we got married.
I ________ (not/tell) my mother yet.
I haven't told my mother yet
I know his comments hurt you, but I'm pretty sure they were not intentional
I know his comments hurt you, but I'm pretty sure they were unintentional
I hate these breaks in the middle of the season. Now I have to wait until February [....]
I hate these mid-season breaks. Now I have to wait until February [....]
They __________ (not/watch) TV much recently.
They haven't been watching TV much recently.
It ______ (snow) for three days.
It had been snowing for three days.
We were late for the plane because we _______ (forget) our passports
We were late for the plane because we had forgotten our passports