(Viên chức Mầm non) 30 đề ôn thi tiếng Anh có đáp án - Phần 2
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He worked …. (24) …. ships until he was 27 years old, and …. (25) …. he joined the navy.

25/30

He worked …. (24) …. ships until he was 27 years old, and …. (25) …. he joined the navy.

then

but

when

If

Giải thích

Chọn đáp án A