----- Nội dung dịch tự động từ ảnh ----- 14:24 5. The accident happened when one of the workers the chemical tank. A. was cleaning B. were cleaning C. cleaned D. had been cleaning 6. The Astronauts Memorial Foundation honours all American astronauts lost their lives on missions or in training. have D. who A. whom 7. He's so brilliant and he can do anything. В. Х C. which A. Out of this world B. The sky's the limit C. It's over the moon D. Once in a blue 8. Europe's biggest ISS project is the Columbus science laboratory astronauts can carry out scientific experiments in weightless conditions. A. there B. which C. where D. when 9. Yuri Gagarin made the first space flight success attracted worldwide attention. A. which B. when C. whose D. where Ex. 4 Find and correct the mistakes. 1. The first Vietnamese citizen whom flew into space in 1980 was Pham Tuan. в с D 2. The first spacecraft which was successfully launched in 1961 belong to Russia. A B 3. The man which name was Neil Armstrong was the first one to walk on the moon. A B DEADLINE (hạn nộp): trước 12h00 thứ 4 ngày 23/02/2022 cho chị Dương.