Put the verb into the correct form.

1. They would be offended if I (not / go) to their party.
2. If you took more exercise, you (feel) better.
3. If it (not / be) for Tom, I wouldn't be here.
4. You should call me if you (see) anything unusual.

5. If you (be) free tonight, we could go out for a drink.

6. If they offered me the job, I think I (take) it.
7. A lot of people would be out of work if the car factory (shut down) .
8. We (not / find) the keys if we don't look for them.

9. Shall we go to the beach if the weather (be) OK?

10. If our ship (strike) an iceberg, it would surely sink.

Complete this dialogue using the second conditional.

A: If you (be) head of space research at NASA, what (be) your research priorities ?

Complete the report with the correct form of the verb in brackets. Use future simple, the present simple, the present perfect and the present continuous.

In the future, civil engineering projects such as roads and bridges (use) more and more plastics and composites. 

Some of these development (happen) right now. Many plastics manufacturers (design) plastic bridges at this very moment. 

In fact, a plastic bridge already exists. A construction company (already / construct) the first European plastic road bridge in Hesse, Germany.

The engineers (install) the bridge on a single day early this year. This is how they did it. First, they (pre-fabricate) the bridge deck from a single piece of plastic five weeks before the installation date. Then they (transport) the deck as a single unit to the construction site. They they (fasten) it onto two steel supports. The total installation (take) less than a single day.

It is probably that the bridge (last) for up to 50 years without repairs, since the composite material (not / corrode) .

Complete these sentences describing the pressure die-casting process using the present active or passive forms of the verbs in brackets, as appropriate.

1. First, metal (heat) until it melts.
2. Molten metal (pour) into the chamber.
3. The piston then (move) along the chamber and (push) the molten metal into the cavity. 
4. The metal (fill) the cavity between the two halves of the mould. 
5. The mould (cool) the metal, which (become) solid. 
6. The mould is opened and the metal component (eject) from it.

Complete these sentences describing the injection moulding process using the active or passive forms of the verbs in brackets, as appropriate.

1. Plastic pellets (store) in a hopper at the top of the machine.
2. The pieces of plastic (transfer) from the hopper into the cylinder.
3. The plastic (propel) along the cylinder by a rotating screw.
4. The heaters around the cylinder (raise) the temperature of the plastic.
5. As a result, the plastic softens and (flow) more easily.
6. The plastic (force) under pressure through a small nozzle. 
7. The soft, warm plastic (injected) into a mould.
8. The mould (cool) {2:=SA:=cools} the plastic, and it becomes hard.
9. The two halves of the mould (separate) and the plastic (eject) .