I'll be back in the twinkling of ____.
in the twinkling of an eye = immediately, very soon
940 MCQ for effective preparation of the test of Idioms of English Grammar section.
Read the MCQ statement: I'll be back in the twinkling of ____., keenly and apply the method you have learn through the video lessons for Idioms to give the answer. Record your answer and check its correct answer and video explanation for MCQ No. 871-5150.