Related Questions

The “questions 57 - 58, have four underlined words or phrases marked a, b, c or d. Identify the one underlined word or phrase that must be changed to make the sentence correct.
The major reason of hydrodynamic noise (i.e., noise resulting from liquid flow) is
What is (all) the noise? The underlined word is a/an
What is all this noise? the underlined word is a/an -

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