—It seems that you know Dr. John very well. —Of course, we ________ together for five years in the 1990s.
Dress warmly, _____ you'll catch cold.
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Although John was the eldest in the family, he always let his sister _____ charge of the house.
Nowadays more and more people are advised to arrange for insurance _______ they or their family members need medical treatment. A so that B. in order that C in case D no wonder that