_______ you cross the road carelessly, you may get a traffic accident.

_______ the room been cleaned yet?

All of them hope that everything will be ready in _______

_______ flower gets its smell from _______ oil that the plant produces.

Peter was the last person _______

“_______,” the doctor advised his patient.

I have just bought a cottage by _______

Peter went _______ the man and asked him the best way to get _______ town.

_______ the question asked by the campus authorities.

Scientists have not been able to cure AIDS, _______ any vaccine against the disease.

Barbara asked me _______ her homework that afternoon.

My birthday coincides _______ the national holiday.

The audience were very _______ by her _______.

National Parks are usually located in places where have been largely undeveloped, and are often with exceptional native animals, plants, and unusual geological features.

Peter was not always so hopeless.

The invention of cars makes transportation many easier, but it is cars that are the greatest  contributor of air pollution.