Bộ 10 đề ôn thi học sinh giỏi Tiếng anh lớp 9 có lời giải chi tiết (Đề 10)

Smoke jumpers are ________descend into remote areas by parachute to fight forest fires. A. firefighters B. when firefighters C. who, as firefighters D. firefighters who

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Smoke jumpers are ________descend into remote areas by parachute to fight forest fires.

firefighters

when firefighters

who, as firefighters

firefighters who

Giải thích

Chọn D