Complex subject is not used with​

1. all preparations being made, we went on an excursion. (the nominative absolute participial construction = независимый причастный оборот) - когда все приготовления были сделаны, мы отправились на экскурсию.

2. i expect you to be on time. (complex object = объектный инфинитивный оборот, сложное дополнение) - я надеюсь, ты придешь вовремя.

3. he is said to learn foreign languages quickly. (complex subject = субъектный инфинитивный оборот, сложное подлежащее) - говорят, что он быстро учит иностранные языки.

1)down 2)make 3) will have 4)is leaving 5) won't drop 6) as soon as space probes, built, delivered, space journeys, space station, shuttle ТЕКСТ Nowadays travelling even to Earth’s closest neighbour planet Mars, let alone the planets in other /solar systems/, is still impractical. A trip to Mars and back would take more than a year. The /equipment/, supplies and fuel for such a trip would /require/ a vast rocket to launch a spacecraft from Earth. A return trip to the outer planets would take a lifetime. For the time being, /scientific research/ remain the best way of exploring distant worlds. Work is under way on a new international /shuttle/, which will be a base for a /space station/ . It is a modular structure, being built in space module-by-module, with sections being /delivered/ into orbit by the /space probes/ and unmanned launch vehicles. In the future, space stations such as this, or permanent bases on the Moon, could be a starting point for /space journeys/. Spacecraft would be /built/ and launched from there rather than from Earth.