Choose the correct word/phrase to complete the sentence:
That was the best pizza I’ve ever ___________!
A) Ate
B) Had
C) Eat
D) Saw

Hint: Verb tenses tell us how an action relates to the flow of time. There are three main verb tenses in English: present, past and future.

Complete step by step answer:
Option A) Ate – is an incorrect answer because the word "ate" is the simple past tense of the verb "eat". The past participle form is "eaten". Thus, this will not be grammatically correct if we use ate in the blank, so, this is an incorrect answer.
Option B) Had – is the correct answer because The word, "had" is the past participle form of the verb, "have" , which means possess/ own. The phrase, "I've ever had" means the same as "I have ever eaten". Thus, this is the correct answer.
Option C) Eat - is an incorrect answer because the word, "eat" is the simple present tense of the verb "eat". The past participle form is "eaten". Thus, this will not be grammatically correct if we use ate in the blank, so, this is an incorrect answer.
Option D) Saw – is an incorrect answer because the word, "saw" is the simple past tense of the verb "see". The past participle form is "seen". Thus, this will not be grammatically correct if we use ate in the blank, so, this is an incorrect answer.

So, the correct answer is “Option B”.

Note:
That was the best pizza I’ve ever ___________! Is in future perfect tense. The future perfect tense is used to indicate a future event that has a definitive end date. The format: Subject+ have + verb in past participle form is used in present perfect tense. So, we need to choose the verb which is in its past participle form.