1.

Look at the underlined part of each sentence. Below each sentence are given three possible substitutions for the underlined part. If one of them (1), (2) or (3) is better than the underlined part, indicate your response. If none of the substitutions improves the sentence, indicate (4) as your response.I am waiting for three-quarters of an hour.

A. I am waiting since
B. I have waited since
C. I have been waiting for
D. No improvement
Answer» D. No improvement


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