1.这项新发明花费了那位科学家许多时间.
This invention _____ ______ ______ a lot of time.
took the scientist
2.把下列动词变为职业名词.
business _______ businessman
post _______ poste
1.这项新发明花费了那位科学家许多时间.
This invention _____ ______ ______ a lot of time.
took the scientist
2.把下列动词变为职业名词.
business _______ businessman
post _______ poste