Question

Read the situation and fill in the blank with the verb in its appropriate form:
arrive/ break/ go/ up/ grow/ improve/ lose

Mike is looking for his key. He can't find it. He ______ his key.

• A. had lost
  
• B. have lose
  
• C. is losing
  
• D. has lost

Answer 1

The correct option is D has lost

The given sentence is in present tense (verb given in the previous sentence is: is looking.) The appropriate verb for the situation of the sentence is: lose.

The action of 'key being lost' has happened sometime before the given point of time, therefore it is in the present perfect tense.
The syntax of present perfect tense is : has (for singular subject) + have (for plural subject) + verb in its third form. Therefore, the correct answer is:
He has lost his key.