In 1900, the energy derived from burning petroleum was only four percent ______ of coal.
A
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Hecomplainedtothebooksellerthattherewereseveralpages______inthebook.
Many patients insist on having watches with them in hospital, ______ they have no schedules to keep.
______ we can hope for is to avoid complete failure in the coming game with that strong team.
In order to buy a new car, you should at least ______ one hundred dollars a week.