Question

Replace the underlined tense form with the correct option:If you will work hard you will certainly succeed.

• A. work
• B. works
• C. worked
• D. have worked

Answer 1

The correct option is A work

The given sentence is a type 1 conditional sentence as it begins with 'if'. It states an unreal situation that is likely to happen. For such sentences, the first verb 'to work hard' is in the simple present tense, followed by the next verb "you will...succeed" in the simple future tense. Hence the future form "will work hard" must be replaced with the simple present form: 'work'. So, option A is correct.
Option B: 'Works' is also in the simple present tense, but it's used when the subject is in the third person point of view: he/she works. The subject 'you' is in the second person, hence B is incorrect.
Option C: 'Worked' is in the past tense. But, the sentence is a type 1 conditional, hence 'worked' is not the correct option. (The simple past tense verb is used in a type 2 conditional sentence, followed by the second verb form in the present continuous form.)
Option D: 'Have worked' is in the present perfect tense, which isn't used in conditionals. Hence D is incorrect.