500 câu trắc nghiệm giới từ trong Tiếng Anh có đáp án cực hay - Phần 10

If there was a technical failure, Gagarin might never get __________ to the Earth.

23/30

If there was a technical failure, Gagarin might never get __________ to the Earth.

to

back

from

down

Giải thích

Chọn B

get back = to return to a place after you have been somewhere else