ADMICRO

Mark‌ ‌the‌ ‌letter‌ ‌A,‌ ‌B,‌ ‌C,‌ ‌or‌ ‌D‌ ‌on‌ ‌your‌ ‌answer‌ ‌sheet‌ ‌to‌ ‌indicate‌ ‌the‌ ‌sentence‌ ‌that‌ ‌best‌ ‌combines‌ ‌each‌ ‌pair‌ ‌of‌ ‌sentences‌ ‌in‌ ‌the‌ ‌following‌ ‌questions‌:

Transportation has been made much easier thanks to the invention of cars. However, cars are the greatest contributor of air pollution.

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