Question

Rewrite the sentence by replacing the word "if" with a suitable alternative:
(The meaning should not change)
If you have any questions, feel free to call me on my cell phone.

• A. Should you have any questions, feel free to call me on my cell phone.
• B. Were you having any questions, feel free to call me on my cell phone.
• C. Unless you have any questions, feel free to call me on my cell phone.
  
• D. None of the above

Answer 1

The correct option is A Should you have any questions, feel free to call me on my cell phone.

The modal, 'should' is used in a conditional sentence in the present tense with a future meaning. It is used in conditional sentences mainly to either give advice/ recommendation/ talk about an obligation/ talk about some thing which is probable/ expected. 'Should' is used along with the simple present form of the main verb. In the given sentence, the main verb in the first clause is 'have'.

Option A: The words, "Should you have any questions" in option A means, "If you have any questions". It discusses the probability of the subject (you) having any questions in future. Hence Option A is correct.

Option B: The linking verb-'were' (which acts as the main verb) is used in conditional sentences to talk about the likelihood of the subject 'being' something/ someone. (Example: If I were the Prime Minister). Here, the main verb is not 'being' but 'having;. Hence, option B is incorrect.

Option C: The auxiliary verb-'had' is usually used for conditional sentences which are in past perfect tense. In this case, the conditional sentence is in future tense. Hence, option C is incorrect.

Unless is used in conditional sentences to replace either 'If... not' or 'Only if'.

Option D: This option is incorrect as option A is the correct answer.