Which one is the correct word to fill up the gap in the sentence? Safrin has lost her cellphone again. This is the second time this ____

Explanation:

Correct Answer is: has happened

This is the first time,This is the second time এরুপ উল্লেখ থাকলে সাধারনত Present Perfect Tense হয়।প্রশ্নে প্রথম বাক্যটি Present Perfect,তাই প্রথম বাক্য অনুসারে পরেরটিও Present Perfect হবে।