퀴즈 past perfect 11
00 : 00
객관식 문제는 질문 또는 진술과 여러 답변 중에서 정답을 선택하는 형식입니다.
👑C2 - 숙련
1. They ____ just finished their project when the deadline was extended.
🎯B1 - 중급
2. She ____ her keys before she left the house.
⭐B2 - 중상급
3. She ____ the book before I arrived.