The flu is believed________by virus that likes to reproduce in the cells inside the human nose and throat.
Most people who have AIDS manage to____ only a few years after they get the disease.
The host country_____ vast facilities,_____ a stadium,swimming pools and living quarters.
You can_____ this English programme_____ the air easily with your short-wave radio.
Are you going to attend the meeting_____ next Saturday?
There_____ to be a wasteland and now stands a building.