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থিম নির্বাচন

আপনার পছন্দের থিম বেছে নিন।

Instruction: Choose the best alternative of the underlined portion. The question was so confusing that he was totally at world's end.

A. at world's end.
B. at his fingertips.
C. on his toes.
D. at logger heads.
E. at his wit's end.
Explanation: (E) "At his wit's end" is an idiom meaning completely confused, frustrated, or at a loss as to what to do due to the complexity of the situation, which perfectly fits the context of a confusing question.