Uzupełnij zdania czasownikami w stronie biernej.

1. The air vents ...... (can/switch) on and off at any moment.

2. The boy who ...... (hit) by a careless driver a few days ago ...... (still/keep) in hospital.

3. Our final exam ...... (carry out) next Friday.

4. Mr Johnson ...... (say) to be the most favoured teacher.

5. In a few weeks time the construction process ...... (finish).

6. Rice ...... (grow) in Asia for centuries.