Which of the following sentences contains a verb in the future tense?

A. Jean's daughter has begun to drive.

B. By that time, he will have been gone for three days.

C. They will take the dog to the park with them.

D. She really should begin to pack.

The answer is C. They will take the dog to the park with them. The verb in correct future tense is "will". In this context the people are planning to walk the dog with them in the future. In the context of B. while it does use "will", the verb tense is not a correct future tense. This because the actual verb that defines the sentence is "have been", making it a form of past future tense. A. is past tense and D. is present future.