Chia động từ. Giúp mình với. Cần lắmmmmmm
Alan Shepard was born on Nov. 18, 1923. He (1.work) on a ship during World War II before he (2.go) back to university. In April 1959, Shepard (3.become) one of NASAs first seven astronauts. On May 5, 1961, Alan Shepard became the first American in space only just 23 days after Yuri Gagarin (4.orbit) the Earth. He (5.fly) on a Mercury spacecraft which (6.have) just enough room for one person. On this flight, Shepard (7.not orbit) the Earth. He flew 116 miles high, and then he came back down. The flight lasted about 15 1/2minutes, but the mission was a success. Shepard's second spaceflight was Apollo 14. On Feb. 15, 1971, Shepard and Mitchell (8. land) on the moon. They (9.collect) more than 100 pounds of moon rocks and done science experiments on the lunar surface before they (10.come) back to the Earth.
had worked - went - became - had orbited - flew - had - didn't orbit - landed - had collected - came
