Which of phrases given below each sentence should replace the phrase printed in bold type to make the sentence grammatically correct? If the sentence is correct as it is, mark 'No improvement required' as the answer.
Question 41
Q41. We don't know how did the thief made an escape.
Question 42
Q42. Their earnings are such that they find it difficult to make both ends to meet.
Question 43
Q43. He is a singer of repute, but his yesterday's performance was quite disappointing.
Question 44
Q44. One of the most significant phenomenons of our time has been the development of cinema.
Question 45
Q45. This is one of the most important inventions of this century.
