It long before we the result of the experiment.
_______ you get on well with a number of people, you are usually friends with only a few.
Sir, you ______ be sitting in this waiting room. It is for women and children only.
As is announced in the newspaper, the 20th World Cup __________ in 2014 in Brazil between June and July.
The buses, ________ were already full, were surrounded by an angry crowd.
In many countries more and more forests and even agricultural land are being lost to development, _______ much of the land to become desert.