We trust to Allah.

We trust to Allah.

We should not hanker after money.

We should love our country. (Imperative) = Let us love our country.

We should abide by the law.

We should abide by the rules.

We shall discuss about the matter. = We shall discuss the matter.

We reached the station after the train had come.

We must help him. (Negative) = We can not but help him.

We must guard against our mistakes.

We learn from mistake.

Warn of = সর্তক করা = They warned him of the dangers of sailing alone.

Vixen = Fox

Very few persons in the office are as health as he. = He is the healthiest person in the office.

Correct:"Would that I had passed the examination!"

Explanation:
"Would that" is a formal expression used to express a wish, especially one that is unreal or regretful.

For a past unreal wish, we use the past perfect tense → had + past participle.

Here, the base verb is pass, so the correct form is had passed.