1. His homework must be done carefully by Ba

2. A big party was being had at 7 o' clock last night 

3. English was being learnt by Hoa when I came

4. A traditional festival will be taken part in by me

5. Was her mother being phoned by you at 8 o' clock yesterday?

6. Should Jane be helped with the sewing?

7. Something must be done by Na before it's too late 

QKĐ: S + was/ were + PP + (by O)

QKTD: S + was/ were + being + PP + (by O)

QKHT: S + had + been + PP + (by O)

HTĐ: S + am/ is/ are + PP + (by O)

HTTD: S + am/ is/ are + being + PP + (by O)

HTHT: S + have/ has + been + PP+ (by O)

TLĐ: S + will be + PP + (by O)

TLG: S + is/ am/ are + going to + be + PP + (by O)

S + modal verb (should, must, have to, can,...) + be + PP + (by O)