Active and Passive Voice

Choose the correct passive form from the options given below:
A cardigan _ by the old lady at that time.

Choose the correct passive form of past tense from the options given below:
The flag __ by the Chief Guest.

Which of the following sentences can be correctly transformed into the passive voice without changing the tense?

Choose the most appropriate option to fill in the blank:
Why ______ (Bill/sack) from his job? What did he do wrong?

Choose the most suitable passive voice conversion of the given sentence.
The Principal will present vote of thanks before the dinner is served.

The sentence has been given in the Active/Passive voice. From the given options, choose the one which best expresses the given sentence in the Passive/Active voice.
They had cleared the dues.

Change the voice of the given sentence:
How much will they pay you?

Choose the correct passive form from the options given below:
English __ all over the world.

Change the following statement into passive voice:
The peon refused him admittance.

Frame a sentence in passive voice from the given information:
My car has disappeared. (it / steal!)

Choose the correct passive form from the options given below:
The letter __ by Rumi yet.

Change the following sentences into passive voice:
Do it.

Choose the most suitable passive voice conversion of the given sentence:
Nobody can predict future.

Change the following sentence to passive form.
Dust and smoke cause smog.

Choose the correct passive form from the options given below:
A prayer _ by the choir in the church next week.

Choose the correct passive form from the options given below:
A cardigan by the old lady at that time.

Choose the most appropriate passive form for the given sentences from the options:
A very old friend helped me.

Rewrite the following in passive voice, without using 'somebody/they/people' etc.:
Somebody accused me of stealing money.

Choose the most appropriate passive form for the given sentences from the option:
The porter was carrying the luggage.

Rewrite the following sentence by changing its voice (Active or Passive):
The clown was being laughed at by them.