Question

Fill in the blanks with the most appropriate word.
If there______ some nice fish in the supermarket, __________you____________ some for supper tonight?
A. Had been / would / buy
B. Were / would / buy
C. Is /will / buy
D. Are /will / buy

Answer 1

Hint: Conditional sentences are sentences that express one thing contingent on something else, e.g. "If it rains, the picnic will be cancelled". They are so called because the impact of the main clause of the sentence is conditional on the dependent clause

Complete answer:
This sentence illustrates a reality and provides a point about a situation that is true and probable. It also uses the first conditional, which uses forms of verbs in present and future tenses. The first conditional structure is: "If" Clause (If + present simple + comma) followed by "Main Clause" (Subject + will / other modal + base verb). Therefore, Option D is the right response here, as it has current and future tense verbs. Options A and B should not be used because they include past tense verbs. It is not possible to use option C as it will make the sentence grammatically incorrect.

Additional Information:
For learners of English as a second language, conditional sentences are often confusing.
There are three types of conditional sentences.
I condition possible to fulfil
II condition in theory possible to fulfill
III condition not possible to fulfill (too late)

Form-
I Simple Present will-future or (Modal + infinitive)
II Simple Past would + infinitive *
III Past Perfect would + have + past participle *

Hence the correct answer is option ‘D’

Note:To improve your knowledge about conditional sentences you should brush up the rules of grammar specially related to the use of verbs.