Поставьте слова в скобках в нужную форму. Pitch is the name (give) to a black substance that can be manufactured from petroleum, coal tar or plants. It was (original) used in road (construct), boat-(build) and waterproofing roofs. It is known for its viscosity (=being semi-fluid), its (sticky) and its (elastic In fact, pitch is the world’s (thick) known fluid. An experiment to let drops of pitch form and then fall has been going for 92 years without (interrupt).