单项选择题
It is still unclear______the Mayor will accept the recommendations of the City Council.（）
A．yetB．aboutC．beforeD．whether
单项选择题 Salpert Corporation’s stock______by 8% during the first quarter of the year.（）
单项选择题 Albertson and Kelman have decided to open a separate______for research and development.（）
单项选择题 (147)）（）
