GMAT English Sentence Correction

Q1. She prepare tea, works on computer and then doing her homework.
A. doing then her homework
B. then is doing her homework
C. doing her homework then
D. then does her homework
Answer :D



Q2. The threat of biological attack in a short span of time has concerned major governments and is the focus of extensive research.
A. The threat of biological attack has become a major concern for governments and in a short span of time, the focus for extensive research.
B. In a short span of time, becoming focus of extensive research, the threat of biological attack has become a major concern of governments.
C. In a short span of time, while the threat of biological attack has become a major concern of governments, it has become the focus of extensive research.
D. In a short span of time, the threat of biological attack has become a major concern for governments and the focus of extensive research.
Answer : D

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