Question

[Yến Nhi]

Put the verbs in brackets into the correct tense.

11. Gagarin (fly) ……………………into space eight years before Armstrong (walk) ……………………on the moon.

12. Fruit flies (be sent) ……………………into space before Laika the dog (make) ……………………her space journey.

13. When the USA (put) ……………………the first human on the moon, Russia (send) …………………… the first human into space.

14. By the time Laika (become) ……………………the first astronaut dog, fruit flies (be launch) ……………………into space.

15. When Virgin Galactic (establish) ……………………in 2004, Dennis Tito already (travel) ……………………into space.

Answer 1

[Sunn]

cái này mình làm rồi nè, bạn tham khảo 

had flown

walked

had been sent

made

put

had sent

became

had been launched

was established

had travelled

Answer 2

[Huỳnh Công Điền]

11.Had flown/walked

12.Had been sent/make

13.Put/had sent

14.Became/had been launched

15.Was established/had travelled

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