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TOEFL Grammar - Choose the right word
ScottsEnglish
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in TOEFL Test
____________________ antibiotics are useful in killing many strains of bacteria, viruses continue to be resistant to these same
antibiotics.
a. Unless
b. While
c. Until
d. Nevertheless
antibiotics.
a. Unless
b. While
c. Until
d. Nevertheless
The correct answer is b, "while" .
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