Improve the bracketed part of the sentence.
The train (is supposing) to arrive at 6 pm yesterday.
Correct option - 3
Here, concept of passive voice is brought under consideration. Since, we know helping verb has is always followed by verb's 3rd form. Thus, option 1 is clearly eliminated. Yesterday is used here, shows past tense, thus, option 2 is eliminated. Hence, option 3 i.e. was supposed is the correct answer.
The correct form of passive voice in simple past tense is :-
Object + was/were + v3 + subject.
Correct sentence - The train was supposed to arrive at 6 pm yesterday.
7. What is the active/passive of - She is putting in many hours of work.