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1. A rocket which ............ (shape) like a tube can send a shuttle into space.
2. Fruit flies ......... (launch) into space before the first dog orbited Earth.
3. Before Neil Armstrong walked on the moon, Yuri Gagarin ........... (already be) in space.
4. The first space tourist named Dennis Tito ........... (train) 900 hours.
5. The planet which is the closest to the Sun ........... (call) Mercury.
2. Fruit flies ......... (launch) into space before the first dog orbited Earth.
3. Before Neil Armstrong walked on the moon, Yuri Gagarin ........... (already be) in space.
4. The first space tourist named Dennis Tito ........... (train) 900 hours.
5. The planet which is the closest to the Sun ........... (call) Mercury.