Choose the correct passive form of present tense from the options given below:
English ___ to us by Mrs. Nobel.
A) is being teach
B) teaches
C) Is taught
D) is teaching

Hint: Passive voice is the voice used to indicate that the grammatical subject of the verb is the recipient (not the source) of the action denoted by the verb. For example- The ball was thrown by the boy' uses the passive voice. `The ball was thrown' is an abbreviated passive.

Complete answer:
In the given question, we have to choose the right passive form of the present tense verb ‘to be’.
The syntax of passive voice here is:
the appropriate form of the verb 'to be' + past participle of second verb ‘teach’
Let us analyze the options given to us in this question:
Option (a.), 'is being teach', is grammatically incorrect as ‘is being’ is in present continuous tense which should be paired with the past participle of ‘teach’ and not ‘teach’.
Therefore, option (a.) is incorrect as it does not follow the aforementioned syntax.
Option (b.), ‘teaches', refers to a verb in the active form, i.e, it indicates that ‘teach’ is something that is performed and not received.
Therefore, option (b.) is incorrect as it is not in passive form.
Option (c.), ‘is teaching', does not include the past participle form of ‘teach’.
Therefore, option (c.) is incorrect.
Option (d.), ‘is being taught', is formed by the appropriate syntax, in passive form.

Therefore, option (d.) is correct.

Note: To answer such a question, you must realize that in passive voice, the main verb should act like the action is being received, and not performed.