Choose the option that completes the sentence correctly: I ______ hard until I crack the MBA entrance examinations. A. Will study B. Am studying C. Was studying D. Study

The correct answer is: Will study.

The sentence is about a future event, so the verb must be in the future tense. The other options are in the present tense, which is not correct for a future event.

• Will study is the simple future tense of the verb “study”. It is used to talk about events that will happen in the future.
• Am studying is the present continuous tense of the verb “study”. It is used to talk about events that are happening now.
• Was studying is the past continuous tense of the verb “study”. It is used to talk about events that were happening at a specific time in the past.
• Study is the simple present tense of the verb “study”. It is used to talk about general truths or habits.

In this case, the speaker is talking about a future event, so the correct verb tense is the simple future tense. Therefore, the correct answer is: Will study.