How many gallons of gas can a semi truck take in? (please read below)?

also if you could answer these that would be great: is a semi truck's energy efficency high? how many miles can a semi go on a full tank of gasoline? and if you can add any more information, awesome! i need this info. for a schoool project and i need it answered today!!! thanks for everything! :)
Update: thanks for your information! :) this will help me alot!!
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