Oтметьте правильные варианты вопросов к предложению "They usually work in the laboratory of inorganic chemistry". Выберите один или несколько ответов:
a. What laboratory do they usually work in?
b. How often do they usually work in the laboratory of inorganic chemistry?
c. What laboratory they usually work in?
d. What they usually work in the laboratory of inorganic chemistry?
e. Do they usually work in the laboratory of inorganic chemistry?
f. Where do they usually work?