1.
leave - leaving (ha e az utolsó betű, akkor az általában kiesik)
cook - cooking
write - writing
stand - standing
fly - flying
try - trying
live - living
study - studying
put - putting (az utolsó mássalhangzó megduplázódik)
swim - swimming
read - reading
lie - lying

2. A személytől függ melyik lesz:
am : E/1
is : E/3
are : E/2, T/1,2,3
My sister is
Tim and Tom are
My hamster is
His brothers are
Our friends are
Her dogs are
The mice are
Those women are
The woman is

3. Az am/is/are mögé kell betenni a not-ot és kész is:
Sara and Tom are not (aren't) playing squash together now.
Jim is not (isn't) going to school on Monday. (Eleve negatív, de ha mindenképp kell csinálni vele valamit, akkor not nélkül állítóban ennek a mondatnak a tagadása: Jim is going to school on Monday.)
I am not reading a book and listening to music.

4. A segédigét (am/is/are) a mondat elejére tesszük, és minden más marad ahogy van (meg a not-ot kivesszük ha van):
Are my best friends going to Spain next year?
Is Jim going to school on Monday?
Is Tom's sister studying Japanese at the moment?

5.
Első oszlop:
Yes, I am.
No, they aren't.
No, I'm not.
Második oszlop:
No, she isn't.
Yes, he is.
Yes, they are.

6.
Are Sara and Tom playing with the ball?
My friends are not living in a nice flat.
I am having a party on Sunday.
Are Sandy's brothers studying French at university?