We "are going" to the expensive restaurant if Dad comes home.

[sitifan]

We 　　　 to the expensive restaurant if Dad comes home.　
(Ａ) go (Ｂ) will go (Ｃ) went (Ｄ) are going
The answer to the above question is option B.
Is option D also acceptable to native speakers?

 

[Barque]

It's possible in casual speech.

Option D is how you might inform someone of a decision you've made earlier.
Option B sounds like you've just made the decision and are informing others what it is.

In very casual speech you may also hear option A, as a shortened form of option B.

 

[jutfrank]

Only C is ungrammatical. A poor question, apparently.

Who wrote this question? Where did you see it?

 

[sitifan]

Only C is ungrammatical. A poor question, apparently.

Who wrote this question? Where did you see it?

It was designed by a Taiwanese teacher of English. I saw the question on a practice test paper.

 

[sitifan]

We won't take a trip to Green Island if it ____ tomorrow morning.
(A) rained (B) rains (C) will rain (D) is raining
The answer to the above question is option B.
Is option D also acceptable to native speakers?

 

[jutfrank]

Yes, it is.

Is this written by the same Taiwanese teacher of English? What does this teacher believe is being practised exactly?

 

[Tarheel]

@sitifan I consider D less likely but not wrong.

 

[emsr2d2]

Were these questions written by your English teacher?

 

[Barque]

We won't take a trip to Green Island if it ____ tomorrow morning.
(A) rained (B) rains (C) will rain (D) is raining

Option D isn't as likely here as in your first question.

 

[sitifan]

Is this written by the same Taiwanese teacher of English? What does this teacher believe is being practised exactly?

I don't know if it is written by the same person. Nor do I know what is being practiced.

 

[sitifan]

Were these questions written by your English teacher?

No. They are quoted from a practice test paper, provided by a publishing company in Taiwan.

 

[jutfrank]

Do you use this material in your lessons?

 

[sitifan]

Do you use this material in your lessons?

Yes.

 

[jutfrank]

Have you thought about not using it?

Can you tell us a little about your teaching context?

 

[sitifan]

Have you thought about not using it?

Can you tell us a little about your teaching context?

Yes, but many other teachers are still using it. I teach English at a junior high school.

 

[5jj]

@sitifan I consider D less likely but not wrong.

Option D isn't as likely here as in your first question.

I don't agree.

 

[Tarheel]

@sitifan If I was going to prepare multiple choice options for an exam I would make sure only one of them was correct.