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: 

 I didn't know that you were at home. I didn't drop in.

Suy nghĩ và trả lời câu hỏi trước khi xem đáp án

ATNETWORK
ADMICRO
YOMEDIA
ZUNIA9