It s always a good idea to _______ your important digital files onto an external hard drive.
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
It's always a good idea to _______ your important digital files onto an external hard drive.
A
back out
B
back up
C
back down
D
back away
Câu hỏi liên quan
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