1) Put in a/an or the: Captain ordered crew

1) Put in a/an or the: The Captain ordered the crew to unload the vessel.

 2) Use correct prepositions: One hot summer morning we decided to take a trip by our car from the city to the ocean. We got on the car and drove to the highway.

3) Put the following into the Passive Voice:

The manufacturers can deliver the machine at the end of the month. The machine can be delivered at the end of the month by the manufacturers.

 4) Put the verbs into the correct tense: The schoolchildren (enter) the classroom ten minutes after the bell (ring). The schoolchildren entered the classroom ten minutes after the bell had ruing.