We ve _______ our old gas heating system to a more eco-friendly electric one.
Về câu hỏi này
Câu hỏi thuộc học liệu "Trắc nghiệm tổng hợp Phrasal Verbs - Đề số 2" trên Học Mỗi Ngày. Bạn có thể xem đáp án, lời giải và các câu liên quan trong cùng đề để ôn tập hiệu quả hơn.
Chi tiết câu hỏi
We've _______ our old gas heating system to a more eco-friendly electric one.
A
changed over
B
changed into
C
changed down
D
changed up
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