Either the dean or the principal______ the meeting

On hearing the news, the president _____his visit to Australia and returned home immediately. [ ]

the many dangers_________– sailors have to face, probably the greatest of all is fog.

spend the spring sneezing, take a look at yourplate. Some foods _____ make allergies worse.

ices of houses, ____________ is oftenreported, have been going up sharply in the past few months.