Bộ 20 đề ôn thi Chuyên Anh năm 2023 (Đề 78)

They don’t need to book in (26) _____ , as trains (27) _____ every few minutes .

26/90

They don’t need to book in (26) _____ , as trains (27) _____ every few minutes .

advance

time

ahead

future

Giải thích

Chọn A