★ Conjunctions - Conjunctive Adverbs
All workers must be equipped with safety devices such as helmets ____ entering the construction site.
A. about
B. during
C. from
D. before
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When John had to decide ____ to apply for a new job or keep his old one, he kept his old job because there were not that many job opportunities available.
A. neither
B. whether
C. either
D. unless
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